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Barium Carbonate

Barium carbonate, barium BaCO3 is an important compound of the formula BaCO3, molecular weight 197.35 .
Barium carbonate
Hexagonal crystal or fine white powder, orthorhombic , hexagonal , cubic three kinds of crystal. Due to the different conditions of preparation , the bulk density of the obtained products are different , generally 0.80 ~ 2.11g/cm3, the particle size of 0.1 ~ 10μm. Density 4.43 g / cm 3, melting point 1740 ℃ (8820 kPa -90 atm ) . Good thermal stability, at 1400 ℃, about 0.1MPa decomposition and emit carbon dioxide. Slightly soluble in water containing carbon dioxide , carbonic acid or an ammonium salt when in the presence of a concentrated solution of sodium sulfate and magnesium sulfate , zinc sulfate, calcium nitrate , calcium chloride , potassium chloride or the like, to increase its solubility . Soluble chloride or ammonium nitrate solution to generate complex, dissolved in hydrochloric acid , nitric acid to release carbon dioxide. Toxic . Barium component prepared carburizing agent is used at a high temperature carburizing a steel member ( hardening ) . Manufacturing cathode tube used to do screening agent . Also used as rat poison , water clarifying agents and fillers. In addition, for the instrumentation, metallurgy industry, for the preparation of fireworks, flares system , ceramic coatings, optical glass materials such as enamel system . Natural barium carbonate ore , barite from the chemical processing system, or carbon dioxide pass into the barium hydroxide solution , sodium carbonate solution or mixed with barium nitrate solution was prepared .
Barium carbonate – the main purpose
Analysis of calcium, magnesium, manganese and zinc iron, measured organic halogen . Used for making barium salts , pigments , fireworks and flares , optical glass, rodenticides , pottery , porcelain, and used as filler and water clarifying agent.

Barium – Toxicity

Barium carbonate is a virulent , can cause acute and chronic poisoning. Because heavy metals barium , barium carbonate reacts with hydrochloric acid in gastric juice , the release of barium ions , causing toxic reactions.
Barium carbonate, barium poisoning poisoning
Barium carbonate into the body through the respiratory tract and digestive tract can cause acute and chronic poisoning , severe cases can be fatal. About the health hazards of barium more such as: occupational exposure to barium carbonate on human lungs, blood, serum potassium and cholinesterase and so on.

Barium – Chronic poisoning
Barium carbonate accumulates in the bones, causing bone marrow leukosis , which occurred in chronic poisoning.
Barium – acute poisoning
When severe acute poisoning occurs when acute gastrointestinal disease, muscle tendon reflexes , convulsions, muscle weakness and other symptoms.
Barium carbonate, barium carbonate Structure Structure

Toxicity:
Oral
Rat LD50: 418mg/kg
Mouse LD50: 200mg/kg
Barium – emergency treatment
For patients with acute barium poisoning , usually taken gastric lavage, enema, taking measures to make the barium emetic agents excreted .
By the administration of potassium can also react with the barium carbonate , barium can become toxic insoluble barium sulfate precipitation , reduce toxicity. The reason for using potassium sulfate , barium poisoning because may cause hypokalemia .

Barium – rescue and care
1 Clear poison vomiting, gastric lavage , catharsis to clear toxins, preventing the absorption of toxins is the primary rescue measures . In this group of patients , 35 cases after eating poison nausea , vomiting 25 cases , 10 cases of diarrhea, there are two cases of tongue to induce vomiting at home to take the pressure method , five cases with 5% sodium carbonate oral vomiting or gastric lavage , oral sulfate and then sodium 20g catharsis , and the remaining patients with mild symptoms , not gastric lavage or induce vomiting. Close observation of the patient’s consciousness , pale , breathing , pulse, blood pressure and other changes, while in the treatment of patients collected vomit timely submission to identify the poison .
2 As the barium ions potassium supplementation agents can activate the cell membrane, so that from the extracellular potassium ions into the cell and lead to lower serum potassium , and potassium in the pathogenesis of course there will be progressively decreased , so in order to prevent hypokalemia, timely potassium chloride treatment is very important . The group of 49 patients given potassium chloride and VitC, VitB 6 infusion, for the temperature more than 38 ℃, poisoning symptoms are relatively heavier ( 9 cases ) to be potassium chloride 5 ~ 6g / d intravenously treated 1 ~ 2d symptoms, body temperature returned to normal. 9 cases of patients had lower serum potassium four cases before the normal use of potassium chloride , potassium and in the process it produces reduced to varying degrees , by potassium 5 ~ 6g / d, 2d after the review properly. 40 cases with normal serum potassium be potassium 4 ~ 5g / d after the review of potassium were within the normal range.
3 Application role thiosulfate thiosulfate is absorbed with the body undigested insoluble barium carbonate , barium sulfate is generated , thereby reducing the toxicity of barium carbonate , sodium thiosulfate , but must pay attention to the slow intravenous injection or infusion, and fully diuretic , so insoluble barium sulfate particles generated composure in the renal tubules . There are nine cases in this group of critically ill patients to be 0.64g of sodium thiosulfate 20ml 0.9% sodium chloride intravenous , Q4H × 3 times.
4 As the group closely observed in 9 cases of hypokalemia , including four cases appear to reduce serum potassium in potassium process, and potassium chloride intravenous overdose can cause peripheral circulatory failure , heart rate to cardiac arrest , so must be diligent blood pressure , pulse , good monitoring and serum potassium, sodium , chlorine content review electrocardiogram , prevent arrhythmias induced hypokalemia or hyperkalemia . The group, 4 patients with abnormal ECG in potassium are converted to normal after the rest have not exception. For the four cases of pregnant patients , with particular attention to the amount of fluid can not be too much speed not too fast, but also to observe whether the pain intensified and the availability of contractions, see red. After treatment and observation , four cases of pregnant women is not bad to happen.
5 good psychological care in this group of patients suffer a sudden illness , mental activity is very complex , expressed as emotional stress , fear , anxiety, worry prognosis until after symptoms , fear has consequences, affecting work , live, learn, especially 4 pregnant women are more worried about the health and safety of the fetus, which we take the following measures:

Caring, comforting patients with cordial words , more with their talk, communicate ideas , distracted.

In calm , warm , full of attitude and emotional impact of infection , thereby enhancing their self-confidence .

Patients given patiently answered questions raised , and treatment measures , the effect , the prognosis for the necessary explanations to eliminate worries.

Noble ethics and skilled business technology to win the trust of patients, so that they are in the best state of mind, and actively cooperate with the treatment and examination.

Strengthening the fetal heart rate monitoring for pregnant patients , observed changes in fetal heart rate , with or without contractions , see red , once there is a change promptly notify the obstetrician , explained in therapy to do , pay attention to the total amount of drug safety and rehydration , speed.

Paraquat use

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sodium metabisulphite

A detailed description editor
Basic Information
Name
English / Latin names
Sodium Pyrosulfite
Jiaoya Liusuanna
English Name

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: SODIUM BISULFITE; disodiummetabisulfite; disodiumpyrosulphite; fertisilo; metabisulfitedesodium; Sodiummetabisufite; sodiummetabisulfite (na2-s2o5); sodiumpyrosulfite (na2s2o5); Sodium dissulfite; Sodium disulphite; Sodium pyrosulphite; SODIUM METABISULFITE, PH EUR; SODIUM DISULFITE DRY TECHNICAL; SODIUM METABISULFITE ACS REAGENT ;… SODIUM DISULFITE DRY, RG, REAG ACS, REAG PH EUR;. SODIUM METABISULFITE, 97 +%, ACS REAGE NT; SODIUM METABISULFITE 97 +% ACS REAG &; SODIUM METABISULFITE REAGENT GRADE 97%; SodiumMetabisulphiteA.R;. SodiumMetabisulphiteFcc
Chinese alias
Sodium metabisulfite ; dipropylene sulfite ; weight thioredoxin ; pyrogallol sulfite ; sodium metabisulfite ; metabisulfite ; edible metabisulfite .
CASRN :7681-57-4
EINECS No. :231 -673-0
InchI Code : InChI = 1/2Na.H2O5S2/c;; 1-6 ⑵ 5-7 ⑶ 4 / h;; (H, 1,2) (H, 3,4) / q2 * +1 ;/ p-2
Formula : Na2S2O5
Molecular Weight : 190.09
Appearance: white or light yellow crystalline powder or small crystals ..
Specification: ≥ 65% of sulfur dioxide
Iron ≤ 0.005%
Water insoluble ≤ 0.05%
PH value of 4.0-4.6
Chemical Name
Chinese chemical name : sodium metabisulfite
Chemical Name : sodium metabisulfite
Chinese Name 2 : sodium metabisulfite
Name 2: sodium pyrosulfite / sodium metabisulphite
Technical Manual Code : 1333
CAS No. :7681-57-4
Formula : Na2S2O5
Molecular Weight : 190.09
Ingredients and composition
Hazardous components CAS No.
Sodium metabisulfite 7681-57-4
Category : Antioxidants .
Properties and Applications
Summary
Sodium metabisulfite ; sodium metabisulfite ; heavy thioredoxin ; Sodium metabisulfite; Sodium pyrosulfite formula Na2S2O5 Molecular Weight 190.10 CAS No. 7681-57-4
Physical and chemical properties
The main ingredients: pure
Appearance: colorless prismatic crystals or white powder ; has sulfur smell , sour, salty , ; Storage falling yellow color gradient .
pH:
300（fen jie） “>Melting point (℃):> 300 ( decomposition )
Boiling Point (℃): Not available
Relative density ( water = 1 ) : 1.48
Solubility: soluble in water , acidic aqueous solution ( at 20 ℃ to 54g/100ml water ; 100 ℃ when 81.7g/100ml water ) . Soluble in glycerol, slightly soluble in ethanol. The relative density of 1.4 . Soluble in water soluble in glycerine , slightly soluble in ethanol. Damp decomposition, exposed in air easily oxidized sodium . Contact with acid emit sulfur dioxide and generate the corresponding salts. Heated to 150 ℃ decomposition.
Stability and reactivity
Materials to avoid : strong acids, strong oxidizing agents.
Avoid contact conditions : moist air.
Physical and chemical properties
Sodium metabisulfite is white or yellow crystalline powder or small crystals , with a strong smell of SO2 , the proportion of 1.4 , dissolved in water , acidic aqueous solution , with a strong acid contact with the release SO2 and generates the corresponding salts, long home air, the oxidation into Na2S2O6, so the product can not go far. Higher than 150 ℃, namely decomposition SO2.
Security terms
S26In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S39Wear eye / face protection.
Wear goggles or masks.
S46If swallowed, seek medical advice immediately and show this container or label.
If swallowed , seek medical advice immediately and show this container or label.
Risk Phrases
R22Harmful if swallowed.
Harmful if swallowed .
R31Contact with acids liberates toxic gas.
Contact with acids liberates toxic gas.
R41Risk of serious damage to the eyes.
Serious damage to eyes .
Determination
Thiosulfate
Take this product 1.1g, slowly add dilute hydrochloric acid 10ml, dissolved in a water bath for 10 minutes , let cool, relocated colorimetric tube , add water to 20ml, as was muddy , and sodium thiosulfate solution ( 0.1 control solution mol / L) 0.20ml comparison is made using the same method , no thicker ( 0.2% ) .
Iron
Take this product 1.0g, 5ml of water and hydrochloric acid 2ml dissolved , evaporated on a water bath , the residue with water 15ml 2ml hydrochloric acid , dissolved , add the amount of bromine test solution and the solution of microscopic yellow , heated to remove excess bromine , let cool , add water to 25ml, according to inspection , 2.0ml solution compared with standard control solution made of iron , not deeper ( 0.002% ) .
Heavy Metal
Take this product 1.0g, 10ml water dissolved, add 5ml of hydrochloric acid , evaporated on a water bath , the residue water 15ml, slowly boil for 2 minutes, filtered , and the filtrate was added so that the amount of bromine test solution clarified , heated to remove excess bromine , let cool, add 1 drop of phenolphthalein indicator solution and the amount of ammonia solution until the solution was pink , vinegar salt buffer (pH3.5) 2ml with water to make a 25ml, according to inspection , containing no heavy metals per million dated .
Arsenic

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Barium chloride

Name: Barium chloride
Formula: BaCl2
Molecular Weight: 208.23
Risk: Toxic
CAS No.: 10361-37-2
Control Type: Unregulated
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1 Physical and Chemical Properties
Physical Properties
White crystalline or granular powder. Bitter and salty. Slightly hygroscopic . At 100 ℃ loses crystal water , but placed in the wet air again absorb two molecules of water of crystallization . Soluble in water , soluble in methanol , insoluble in ethanol, ethyl acetate and acetone. The relative density of 3.86 . Melting point 963 ℃, boiling point 1560 ℃, refractive index 1.635 . Barium yellow- green flame reaction
Chemical properties
Barium chloride is commonly used laboratory analytical reagents , mainly for precipitation sulfate , barium sulfate to produce insoluble precipitate .
2 Preparation Method Editor
Reduction on industrial carbon barite get barium sulfide , barium sulfide dissolved in concentrated hydrochloric acid or calcium chloride that was saturated barium chloride . This is the method commonly used , calcium and strontium can be easily removed impurities
3 Use the Edit Profile
Mainly used for metal heat treatment, barium salt manufacturing, electronic instruments , also used for machining heat treatment agent. Determination of sulfate and selenium salts , etc. , chromatography, drip Determination of platinum , water softener . Fabric dyeing .
4 Storage Condition
Store in a cool , ventilated warehouse. Keep away from fire and heat. Packing seal. Should oxidants , acids, food chemicals stored separately and avoid mixing reservoir.
5 hazardous editor
Barium is a virulent , 0.2 ~ 0.5g ingestion can cause poisoning, lethal dose of 0.8 ~ 0.9g. If found poisoned , magnesium or sodium -speed service , taking gastric lavage , enema, vomiting and other measures. Rapid medical treatment, barium poisoning obvious symptoms of hypokalemia . LD50 approximately 118mg/kg.

Sulfamic acid

Name : Sulfamic acid
English Name : ACETO ACID; AMIDOSULFONIC ACID; AMIDOSULFURIC ACID; AMINOSULFONIC ACID; BETZ 0254; SULFAMIDIC ACID; SULFAMINIC ACID; SULPHAMIC ACID; aminosulfuricacid; Imidosulfonic acid; Jumbo; Kyselina amidosulfonova; Kyselina sulfaminova; kyselinaamidosulfonova; kyselinaamidosulfonova (czech); kyselinasulfaminova; kyselinasulfaminova (czech); sulfamic; sulphamidic acid
Grade : AR
CAS No. :5329 -14-6 [ 1 ]
Formula : H3NO3S
Weight: 97.09

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No. MDL: MFCD00011603
EC Number: 226-218-8
2 Products
Raw materials : urea, fuming sulfuric acid, chlorosulfonic acid
Preparation Products : cobalt sulfamate , nickel sulfamate , Acid Green 20 , cyclamate, detergents, alkali superplasticizer , affinity of the toner , ammonium sulfamate , strong detergents , cleaning agents
Characters
Colorless or white crystals , soluble in water, slightly soluble in ethanol and methanol, slightly soluble in acetone, ether insoluble in aqueous solution gradually break down into ammonium bisulfate , water solubility :. 146.8 g / l (20 ℃)
Physical parameters
Melting point : 215-225 ℃
Storage and transportation
Sealed dry place.
Instructions for use
Standard amount of the base titration , complexation masking agents , organic trace analysis of nitrogen and sulfur determination criteria .
Hazard statement
Dangerous code : Xi
Hazard Class : R36/38- R52/53
Security Level : S26-S28-S61
3 Synthetic Method
An amino acid produced in many ways, sulfur dioxide or acetone oxime with hydroxylamine as raw material hydroxylamine , sulfite or sulfate and ammonia as raw materials ammoniting , urea and chlorine acid as raw materials sulfochlorination law , fuming sulfuric acid and urea as raw fuming sulfuric acid , urea , sulfur trioxide and sulfuric acid as raw materials and fuming sulfuric acid method (also known as liquid phase ) and ammonia via gasification and sulfur trioxide in Gas under vapor phase reaction conditions and the like. Domestic and industrial significance of the process has to send two amination with ammonia and direct synthesis of sulfur trioxide fuming sulfuric acid method. Urea is sulfonated with fuming sulfuric acid to form an amino acid in the crude 40-70 ℃, and then water was added for crystallization to obtain the amino acid product. Consumption of raw materials fixed: Urea 2000kg / t, oleum 1500kg / t.
2 , there are two main methods synthesis gas and liquid method. Fumed harsh operating conditions , equipment material requirements . Byproducts and more easily adhere to the amino acids and the reactor wall need regular cleaning. High production costs . The advantage is the high product purity. Manufacturers use mostly liquid phase .
3 excess fuming sulfuric acid in the reaction vessel , cooled with stirring to 20 ~ 40 ℃, start adding the mixed proportion of urea and sulfuric acid . After completion of the addition , stirring at about 20 ℃ 8 h. Then gradually warmed to 70 ~ 90 ℃, distilled sulfur trioxide , cooling crystallization . The crude obtained after the solid-liquid share amino acid, and recrystallized from water , dehydrated and dried to obtain a high-purity quality amino acid.
Four amino acid is a strong Lewis acid and a strong Lewis base NH3 SO3 adduct , prepared a small amount of high purity when the amino acid , in a completely anhydrous conditions , with high purity directly by reaction with ammonia SO3 . If a larger amount of urea is available with fuming sulfuric acid reaction to the system. The round bottom flask equipped with a mechanical stirrer was placed in the water bath , to which was added 560g 100% sulfuric acid under vigorous stirring to 100g of urea times ( about 45min plus End ) was slowly added to sulfuric acid , being careful not the temperature exceed 40 ℃. Then thereto was added 309g of fuming sulfuric acid ( containing 65 % free SO3), and 16h is placed at a temperature of 42 ~ 45 ℃ . Filtered through a glass frit funnel the reaction mixture was washed first with pure sulfuric acid , washed with 50% sulfuric acid , washed with cold methanol and finally with .
5 heating oleum 20% to 30 ℃, urea was slowly added , the temperature controlled at 60 ~ 65 ℃, after adding heat 3H, then warmed to 80 ~ 85 ℃, incubated 2h, after the reaction was cooled to 5 ℃, filtration, drying the obtained crystals by centrifugation , washed with 5% ethanol and recrystallized with distilled water and drained after purification to obtain pure amino acid .

Polyvinyl alcohol

Polyvinyl Alcohol

Chemicals Name : polyvinyl alcohol, vinylalcohol polymer, poval, referred to as PVA
CAS No. :9002-89-5
Formula : [C2H4O] n
Molecular weight: 44.05
Structure:Non-toxic
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1,Security terms : S24/25 Avoid contact with skin and eyes Avoid contact with skin and eyes.
S26In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37Wear suitable protective clothing and gloves.
Wear suitable protective clothing and gloves.
S24/25Avoid contact with skin and eyes.
Avoid contact with skin and eyes.
S45In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
In case of accident or feel unwell, seek medical advice immediately ( if possible show the label ) .
Risk Phrases R23/24/25Toxic by inhalation, in contact with skin and if swallowed.
Inhalation , in contact with skin and if swallowed poisonous.
2, Technical indicators
Polyvinyl alcohol product standards (cp2010)
No.                      Index Name                    Standard
1                         Exterior                       White powder
2                      Viscosity                        3-70
3                     PH value                        4.5 ~ 6.5
4                   Loss on drying                  ≤ 5.0
5             Residue on ignition                 ≤ 0.5
6                    Acid value                        ≤ 3.0%
7                Alcoholysis                          85 ~ 89
8             Heavy Metal                       ≤ 10PPM
Polyvinyl alcohol product standards (USP25)
Low viscosity
No.                       Index Name                       Standard
1                              Exterior                     White powder
2                          Viscosity                       4.0 ~ 7.0
3                         PH value                           5-8
4       The average molecular weight        16000 to 20000
5                  Loss on drying                         ≤ 5.0
6               Residue on ignition                     ≤ 2.0
7           Water- insoluble impurities              ≤ 0.1%
8             The degree of hydrolysis                +
9              Organic volatile impurities              +
10                 Content                             85.0% ~ 115.0%
Medium viscosity
No.                              Index Name                       Standard
1                                      Exterior                    White powder
2                                    Viscosity                       21.0 ~ 33.0
3                                  PH value                              5-8
4                 The average molecular weight           110000 ~ 130000
5                           Loss on drying                           ≤ 5.0
6                       Residue on ignition                       ≤ 2.0
7                Water- insoluble impurities                 ≤ 0.1%
8              The degree of hydrolysis                    +
9         Organic volatile impurities                      +
10            Content                         85.0% ~ 115.0%
High viscosity
No.                                 Index Name                                            Standard
1                                      Exterior                                             White powder
2                                    Viscosity                                               40.0 to 65.0
3                                  PH value                                                     5-8
4                   The average molecular weight                       180000 to 200000
5                            Loss on drying                                                  ≤ 5.0
6                  Residue on ignition                                                    ≤ 2.0
7               Water- insoluble impurities                                           ≤ 0.1%
8                  The degree of hydrolysis                                         +
9                 Organic volatile impurities                                        +
10                         Content                                                     85.0% ~ 115.0%
3, Pharmaceutical Grade
Pharmaceutical grade and specifications with EG , EG system uses. Pharmaceutical grade polyvinyl alcohol , polyvinyl alcohol level is different from the chemical industry , it is a very safe organic polymer , non-toxic to humans , no side effects, biocompatible , water-based gel , especially if he ‘s in medical in ophthalmology , wound dressings and artificial joints aspects are widely used in pharmaceutical polyvinyl alcohol film while the film , an artificial kidney film also has to use. Its security can be used to repair skin wounds , eye drops and eye products visible in general. Some models are also often used in cosmetics mask, cleanser , lotion and emulsion , is a commonly used security into film.

4,Risk
Health hazard : inhalation , ingestion or absorption through the skin harmful to eyes and skin

Stimulation.
Explosion hazard: The product is flammable , irritating.

5,Aid measures
Skin contact: Remove contaminated clothing, mobile water rinse .
Eye contact: Did eyelid, mobile water or saline. Doctor.
Inhalation: from the scene to fresh air. If breathing is difficult , give oxygen. Doctor.
Ingestion : drink plenty of water, induce vomiting . Doctor.
6, Fire-fighting measures
Hazardous characteristics : powder can form explosive mixtures with air , when it reaches a certain concentration, when Mars will explode. The thermal decomposition of flammable gases.
Hazardous combustion products : carbon monoxide, carbon dioxide.
Fire fighting methods : firefighters are required to wear gas masks, body wear firefighting suits , fire in the wind . Extinguishing Media: Water spray, foam, dry powder , carbon dioxide , sand.
7 leak handling
Emergency treatment: isolation leak contaminated areas, restricting access. Cut off the fire source . Recommended emergency personnel wearing a dust mask ( full cover ) , wear protective clothing. To avoid dust, carefully scan, bag placed transfer to a safe place . You can also rinse with plenty of water , wash water diluted into the wastewater system . If large spills, using plastic sheeting, canvas cover . Recycling or collection shipped to the waste disposal sites.
8, Handling
Handling Precautions: provide good natural ventilation.

The operator must go through specialized training , strict adherence to rules . Proposed operators wear self-absorption filter respirators , wearing chemical protective safety glasses , wear protective overalls on infiltration , wear rubber gloves. Away from fire , heat, workplace smoking . Use explosion-proof ventilation systems and equipment. Avoid generating dust . Avoid contact with oxidizing agents . Handling of light when light unloading , packaging and containers to prevent damage . Corresponding with the variety and quantity of fire equipment and emergency equipment leakage . Empty containers may be harmful residues .
Storage: Store in a cool , ventilated warehouse. Keep away from fire and heat. Oxidants should be stored separately and avoid mixing reservoir . Corresponding with the variety and quantity of fire equipment . Storage areas should be equipped with suitable material spill .

Diazolidinylurea information

1 Basic information Chinese Name: Diazolidinyl Urea Chinese alias: N- (1,3- 2,5-bis (hydroxymethyl)-dione-4-imidazolyl group) -N, N’- two methylol urea; two azo Lee Ting urea; two dual chlorine alkyl urea; Pierre B; N- hydroxymethyl -N- (1,3- dimethylol-2,5-dione-4-imidazolyl group) -N’- methylol urea; diazo imidazolidinyl urea; Pierre A; bis (hydroxymethyl) imidazolidinyl urea; Pierre 115 (imidazolidinyl urine) English Name: Diazolidinyl urea English Synonyms: DIAZOLIDINYL UREA; N- (1,3-Bis (hydroxymethyl) -2,5-dioxo-4-imidazolidinyl) -N, Asics Pas Cher N’-bis (hydroxymethyl) -urea; germall11; hyl) -; imidazolidinylurea11; n – (1,3-bis (hydroxymethyl) -2,5-dioxo-4-imidazolidinyl) -n, n’-bis (hydroxymethyl; n- (hydroxymethyl) -n- (1,3-dihydroxymethyl-2,5- dioxo-4-imidazolidinyl) -n ‘- (hyd; N- (Hydroxymethyl) -N- (1,3-dihydroxymethyl-2,5-dioxo-4-imidazolidinyl) -N’ – (hydroxymethyl) urea; roxymethyl) urea ; urea, n- (1,3-bis (hydroxymethyl) -2,5-dioxo-4-imidazolidinyl) -n, n’-bis (hydroxymet; urea, nike tn requin pas cher n- [1,3-bis (hydroxymethyl) -2 , 5-dioxo-4-imidazolidinyl] -n, nike air max 2016 blauw n’-bis (hydroxymet; Urea, N- [1,3-bis (hydroxymethyl) -2,5-dioxo-4-imidazolidinyl] -N, N’-bis (hydroxymethyl) -; 1- [1,3-bis (hydroxymethyl) -2,5-dioxoimidazolidin-4-yl] -1,3-bis (hydroxymethyl) urea; MicrocideIvtm; Germall; N- (HYDROXYMETHYL) -N- (1,3-DIHYDROXYMETHYL-2,5-DIOXO-4-IMIDA .; DIAZOLIDINYLUREA (GERMALL II); 1,3-Bis (hydroxymethyl) -5- [1,3-bis (hydroxymethyl) ureido] hydantoin; Germall Ⅱ CAS: 78491-02-8 Formula: C8H14N4O7 Molecular Weight: 278.22 2 Physical and chemical properties Appearance: white powder, hygroscopic, nike air max pas cher odorless or with a characteristic odor. Storage condition: 2-8 ° C 3 uses Diazolidinyl Urea Used in cosmetics, food processing and animal feed industries,

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U.S. new ethylene cracker production will reach 10

American Plastics News Network News, The Dow Chemical Company executives said, thanks to shale gas in North America to bring the advantages of raw material supply, the U.S. petrochemical market is being ushered in four wave of investment wave.
Dow Jim Fitterling at IHS World Petrochemical Conference, held March 26 in Houston, said: “Investing tide may be much larger than we expected.”, Former U.S. announced at least 120 energy-related chemical expansion project an investment of over 100 billion U.S. dollars.
Petrochemical companies in the United States have announced new production of ethylene cracker reached 10, including a unit of Dow’s Freeport, Texas in the United States. Fitterling estimated that 6 will be completed as scheduled. He added that this investment demonstrates the range of investment theory investors. Dow’s Freeport project will add a lot of polyethylene capacity.(chemicals offer)

Gong Li : China’s methanol production capacity is not excess

- Interview with Canadian methanol Corporation CFO tribute force
“We’re just two weeks ago to buy more than 1,000 acres of land to build at least 10 annual output of 1.8 million tons of methanol plant , the target market is China .” At a reception held at the Canadian Embassy on March 20 , reporters met Canadian methanol Corporation (CMC) CFO tribute force , but also remember his words . Continue reading →