1 through the compressed carbon dioxide into the concentrated aqueous ammonia, carbon dioxide and placed under pressure, and cooled, precipitated crystals were separated by centrifugation, from dehydration. When purification was dissolved in water, ethanol was added, so that recrystallization.
(2) After carbonization absorbing ammonia water, carbonation with carbon dioxide, and then separated and dried to obtain ammonium bicarbonate. The chemical reaction equation:
NH3 + CO2 + H2O → NH4HCO3
3 from lime and washed purified CO2 gas, which leads to ammonia to make it saturated after separation by centrifugation, hot air drying derived products. [4]
4 Typical small nitrogenous fertilizer plant to produce ammonium bicarbonate anthracite as raw material, preparation of semi-water gas, which after removal of hydrogen sulfide into the pressurized shift reaction system, resulting nitrogen, hydrogen and carbon dioxide mixture into the carbonation tower, In this concentration of carbon dioxide and about 17% aqueous ammonia, ammonium bicarbonate crystals separated by a centrifuge to obtain ammonium bicarbonate products. Removal of carbon dioxide feed gas, after further removal of a small amount of residual carbon dioxide and carbon monoxide into the ammonia synthesis systems. Dried at room temperature, ammonium bicarbonate, a certain stability and good flowability. Some Chinese bicarbonate plant using air-drying method to product drying; adding more plants using crystallization modifiers way to make ammonium bicarbonate crystals grow relatively thick, solid liquid separation so as to improve the operating conditions, so from 5% moisture content of product ~ 5.5% decrease 3.5% to 2.5%, and reducing the loss of decomposition products of the agglomeration have a significant effect. [3]
Production of ammonium bicarbonate reaction is:
NH3 + H2O → NH3 * H2O + heat NH3 · H2O + CO2 → NH4HCO3 + heat.
Author Archives: lubon
The main purpose of tert-butanol
1, often in place of n-butanol as a solvent coatings and pharmaceuticals. Used as an internal combustion engine fuel additives (to prevent carburetor icing) and anti-knock agent. As the alkylating intermediate raw materials and the production of t-butyl synthetic organic compounds, to produce methyl methacrylate, t-butyl phenol, tert-butylamine, etc., for the synthesis of drugs, perfumes. Tert-butanol dehydration can be prepared from 99.0 to 99.9% purity isobutene. Detergent as solvent extraction of drugs, pesticides, waxes with a solvent, a cellulose ester, industrial plastics and paint solvents, but also for the manufacture of denatured alcohol, spices, fruit essence and isobutylene.
2, solvent and chromatographic analysis of molecular weight determination with reference substances. In addition, often in place of n-butanol as a solvent coatings and pharmaceuticals.
3, used as a solvent, chromatography standard material.
4, for spices synthesis.
5, is used as an internal combustion engine fuel additives (to prevent carburetor icing) and anti-knock agent. As the alkylating intermediate raw materials and the production of t-butyl synthetic organic compounds, to produce methyl methacrylate, t-butyl phenol, tert-butylamine, etc., for the synthesis of drugs, perfumes.
Pivaloyl chloride MSDS
Chinese alias: 2,2 – dimethyl-propionyl chloride; trimethylammonium chloride; tert-amyl chloride; trimethyl acetyl chloride
Name: Pivaloyl chloride
English Name: 2,2-Dimethylpropanoyl chloride; Trimethylacetyl chloride
CAS No.: 3282-30-2
Formula: C5H9ClO
Linear Formula: (CH3) 3CCOCl
Molecular Weight: 120.58
Purity: ≥ 98.0%
No. MDL: MFCD00000709
Beilstein No.: 385668
EC Number: 221-921-6
2 Characters
Colorless oily liquid, soluble in common organic solvents, water and alkali decomposition, flammable
Three physical parameters
Density: 0.979g/mL (25 ℃)
Boiling point :105-106 ℃
Flash point: 19 ℃
Refractive index (n20 / D): 1.412 (lit.)
4 Hazard statement
Dangerous code: F, T +
Hazard Class :11 -14-22-26-34
Security Level :16-26-36 / 37/39-45
UN number: UN2438
Domestic hazardous chemicals No.: 81117
5 Safety Data
Hazard Symbols F; T Description
Risk Codes R11; R22; R23; R34 Description
Safety Description S16; S26; S28A; S36/37/39; S38; S45 Description
Transport Information UN 2438
6 Purpose
Pivaloyl chloride is a very important acylating agent, mainly used as pharmaceutical intermediates, as the main raw material for the preparation of amides and many drugs in lipid phenol; currently used hydroxylamine hydroxylamine benzyl benzyl penicillin and cephalosporins, cefazolin production oxazoline, double pivaloyl adrenaline and other drugs. It is also a lot to do with the production of pesticide intermediates, such Chloropivaloyl chloride.
Chemical synthesis for the protection of the amino group, while increasing the steric effect, the location of a particular product is easily obtained.
Potassium salt of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP.Kx) MSDS
First, Properties and Uses
HEDP · Kx is HEDP of potassium, HEDP · Kx and HEDP salt compared with the higher solubility at neutral conditions are excellent calcium carbonate scale inhibitors, HEDP · Kx mainly used for metal corrosion, pool pollution, metal cleaning, vessel cleaning, iron fouling control, metal pretreatment, low pressure boiler water, circulating water.
Second, the technical indicators
| Item | Index |
| Exterior | Colorless to pale yellow transparent liquid |
| Active component (HEDP),% | 26.0-30.0 |
| Total phosphorus content (PO 4 3 - meter),% | 24.7-26.7 |
| Fe (to Fe2 +) content mg / L ≤ | 20.0 |
| Density (20 ℃) g / cm 3 | 1.30-1.40 |
| PH (1% solution) | 6.0-8.0 |
Third, packaging and storage
HEDP · Kx plastic barrel, 30kg or 250kg, can be determined according to user needs. HEDP · Kx stored in a cool room, storage for ten months.
Fourth, security
HEDP · Kx is neutral, pay attention to the operation of labor protection, should avoid contact with skin and eyes, flush with water after contact.
Potassium salt of Amino Trimethylene Phosphonic Acid (ATMPK) MSDS
Aminotrimethylene potassium phosphonate is part of the potash solution ATMP, relative to the same amount of sodium, ATMP · Kx has a higher solubility in water can prevent the formation of scale into the dirt salts, especially calcium carbonate scale formation.
Chinese name: aminotrimethylene potassium phosphonate
Chinese alias: aminotrimethylene potassium phosphonate; times aminotrimethylene three acid potassium salt; aminotrimethylene potassium phosphonate ATMPKX; ATMPoKx
English name: Amino Trimethylene Phosphonic Acid, Potassium salt
English Name: [nitrilotris (methylene)] trisphosphonic acid, potassium salt; [1] Phosphonic acid, nitrilotris (methylene) tris-, potassium salt;
CAS :27794-93-0
EINECS :248-660-0
Formula: C3H6K6NO9P3
MW: 527.5921
Properties and Uses
ATMP · Kx is a partial solution of the potassium salt of ATMP, with respect to the same amount of sodium, ATMP · Kx has a higher solubility in water to prevent the formation of scale scaling salts, especially calcium carbonate scale formation. ATMP · Kx is especially suitable for oil field injection water systems.
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Project
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Index
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Exterior
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Colorless to pale yellow transparent liquid
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|
Active component (ATMP dollars)%
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35.0-40.0
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pH (1% solution)
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2.0-2.5
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Total phosphorus (as PO4)%
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34.8-36.8
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Fe (with Fe) content ppm ≤
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35
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Density (20 ℃) g / cm
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1.25-1.35
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Applications and use
ATMP · Kx and other organic acid, polylactic acid or salt to form organic alkaline water treatment agent, for circulating cooling water systems under a variety of different water quality conditions.
Security
ATMP · Kx is slightly acidic, avoid skin contact with the eyes, once contacted, rinse immediately with plenty of water.
PAPE product performance
PAPE is a new kind of water treatment chemicals, has good scale and corrosion inhibition properties. Since the introduction of the multiple molecular polyoxyethylene not only improve the corrosion performance, but also improve the scale of calcium scale and decentralized capacity sediment. Barium inhibitor existing domestic water beyond the control of scale deposition of strontium has an excellent inhibitory effect on water, calcium carbonate, calcium sulfate deposition of insoluble salts also has excellent scale inhibition effect on steel with cathodic protection , corrosion better than the existing domestic similar products. Polyhydric alcohols and polycarboxylic acid ester salt, an organic phosphonate, an inorganic phosphate and zinc salt in water-miscible good stabilizer. PAPE for oilfield acquisition inhibitor (especially recommended as a substitute for Nalco Visco 953) and industrial cooling water corrosion inhibitors.
PAPEMP Performance:
Calcium carbonate, calcium phosphate, calcium sulphate scale inhibition performance is excellent, and can effectively inhibit the formation of silica scale, and has a good role in stabilizing metal ions such as zinc, manganese and iron. PAPEMP salinity scale inhibitor for reverse osmosis membrane systems, multi-stage flash systems high, high turbidity, temperature scale and corrosion inhibition system (such as systems scale coal high temperature and high turbidity water vaporization system), textile assistant agents and paper additives (yellowing inhibitors), can replace EDTA, DTPA, NTA, etc.
Polyaluminium Chloride Use
⒈ urban drainage purification: river water, reservoir water, groundwater.
⒉ industrial water purification.
⒊ urban sewage treatment.
⒋ industrial wastewater and waste recycling useful materials to promote the recovery of the settlement of coal washing waste water, starch and starch manufacturing.
⒌ various industrial wastewater treatment: dyeing wastewater, leather wastewater, wastewater containing fluoride, heavy metals and waste water, wastewater, wastewater, coal washing waste, mining waste, brewing wastewater, metallurgical waste, meat processing wastewater, sewage treatment.
⒍ paper sizing.
⒎ sugar refining.
⒏ casting.
⒐ wrinkle-free fabric.
⒑ catalyst carrier.
⒒ medicine refining
⒓ quick-setting cement.
⒔ cosmetic ingredients.
Monosodium phosphate Indications
(1) for the prevention and treatment of hypophosphatemia. Also as a full intravenous nutritional therapy phosphorus additives to prevent hypophosphatemia.
(2) adjuvant urinary tract infection, the drug can make urine acidification, thereby enhancing the almond acid methenamine and methenamine hippurate antibacterial activity, and can eliminate the ammonia smell of urine in the urinary tract infection and turbidity.
(3) calcium kidney stone prevention. This medicine can make urine acidification, increasing the solubility of calcium to prevent the deposition of calcium in the urine, thus preventing the recurrence of calcium-containing kidney stones.
(4) the treatment of hypercalcemia. In recent years has not used the drug to treat high hypercalcemia, while others are more safe and effective method of application.
Methylbenzotriazole (TTA) MSDS
Basic Information
Chemical name: methyl benzene Benzotriazole, also known as methyl styrene-acrylic triazole, referred TTA; 5 – methyl-1H-benzotriazole; 5 – methyl benzotriazole; 5 – methyl benzotriazole; between tolylsulfinate hydrogen azide; between Asia azide toluene; methyl benzotriazole; 5 – methyl benzene triazole; 4 (or 5) – methyl-1H-benzo three azole; tolutriazole; Methylbenzotriazole; methyl triazole; methyl-1H-benzotriazole; 4 – methyl-1H-benzotriazole; 5 – methyl benzene Benzotriazole; A benzene Benzotriazole; tolyl triazole
CAS: 29385-43-1 136-85-6; 29385-43-1
MF: C7H7N3 MW: 133.15
2 Appearance
White granules or powder, can be processed into big flakes, small pieces of granular, columnar, fine granule, powder
3 Basic Uses Edit
This product is mainly used for metal (such as silver, copper, lead, nickel, zinc, etc.) rust and corrosion inhibitors, are widely used in anti-rust oil (fat) products in copper and copper alloys used for vapor phase corrosion agent, lubricant additives, circulating water treatment agent, automobile antifreeze. This product is also available with a variety of scale inhibitors, biocide used in conjunction with, especially for closed loop cooling water system corrosion and very good results.
4 Basic characteristics
Pure strains of white granules or powder 4 – a mixture of methyl benzene Benzotriazole melting point 80-86 ℃, insoluble in water, soluble in alcohol, benzene, toluene, chloroform – methyl benzene Benzotriazole and 5 other organic solvents, soluble in dilute alkali.
5 Production
① In the reactor, the 3,4-diaminotoluene placed in water and dissolved by heating;
The step ① to ② into a solution of 3,4-diaminotoluene was added sodium nitrite reaction;
③ ② step into the solution is cooled;
In step ③ ④ sulfuric acid was added dropwise into the solution, a large number of crystal formation;
The mixture obtained in step ④ ⑤ deprotection liquid treatment;
Proceeds will step ⑤ ⑥ crystal heating, dehydration;
Step ⑥ ⑦ The resultant crystal was then distilled to produce the 5 – methyl-benzo triazole; production method of the present invention are 3,4-diaminotoluene as a raw material, through pressure synthesis, acidification, dehydration, distillation , Preparation of 5 – methyl benzene Benzotriazole the process is simple, easy to control the manufacturing process, high yield, high purity, low production cost, easy to organize industrial production.