basic Chromic sulfat
basic Chromic sulfat
CAS: 12336-95-7
Molecular Formula: CrHO5S
basic Chromic sulfat - Names and Identifiers
| Name | basic Chromic sulfat |
| Synonyms | chromedol BASICCHROMICSULPHATE basic Chromic sulfat Chromic sulfate,solid chromium hydroxide sulfate Chrom(III)-sulfat, basisch chromium hydroxide sulphate Chromium hydroxide sulfate (Cr(OH)(SO4)) Chromium hydroxide sulfate (as chrome III) |
| CAS | 12336-95-7 |
| EINECS | 235-595-8 |
| InChI | 1S/Cr.H2O4S.H2O/c;1-5(2,3)4;/h;(H2,1,2,3,4);1H2/q+2;;/p-3 |
basic Chromic sulfat - Physico-chemical Properties
| Molecular Formula | CrHO5S |
| Molar Mass | 165.066 |
| Physical and Chemical Properties | The commercial product is a mixture of Cr(OH)SO4 and Na2SO4 with the general formula: Cr(OH)m(SO4)m. X H2O. It is an amorphous dark green powder and the particles have a glassy state under a microscope. Soluble in water, strong hygroscopicity, toxic. |
| Use | Mainly used for tanning and mordant dyeing. Preparation Process: organic reduction method the sodium dichromate mother liquor is acidified with sodium bisulfate solution, and then sucrose is added for reduction to prepare basic chromium sulfate. The reaction is as follows: 8Na 2 Cr 2 O 7 48NaHSO 4 C 12 H 22 O 11 → 16Cr(OH)SO 4 27H 2 O 12CO 2 ↑ packing: lined with plastic or paper bag, jacket in hemp bag. The package should be marked with |
basic Chromic sulfat - Upstream Downstream Industry
| Raw Materials | Sodium dichromate dihydrate Sucrose SODIUM SULFATE DECAHYDRATE Basic chromic sulfate Sodium hydrogen sulfate,solution |
basic Chromic sulfat - Nature
| EPA chemical information | Chromium hydroxide sulfate (Cr(OH)(SO4)) (12336-95-7) |
Last Update：2024-04-10 22:29:15
basic Chromic sulfat - Uses and synthesis methods
production method
The production methods of basic chromium sulfate mainly include organic reduction method and sulfur dioxide reduction method. The organic matter reduction method uses sodium dichromate mother liquor with sodium bisulfate solution (40~42 ° Bé) or sulfuric acid in a lead-lined or glass-lined stirred reactor for stirring and acidification, and slowly adds sucrose reducing agent under stirring. The hexavalent chromium is reduced, and the solution is kept boiling at the end of the reaction, which is conducive to the complete reaction.
The reaction product is a syrup-like viscous liquid. Add water to adjust the concentration of the solution to 40~42 ° Bé. First, it is naturally cooled, and then frozen to below 10 ℃ in a cooling crystallizer to make part of the sodium sulfate form mirabilite crystals. After centrifugal separation, a liquid basic chromium sulfate product is prepared, and then concentrated and dried to obtain a solid basic chromium sulfate finished product. Its
category
toxic substances
toxicity classification
Poisoning
acute toxicity
oral-rat LD50 7760 mg/kg; Oral-mouse LD50:2900 mg/kg
stimulus data
eye-rabbit 50 mg severe
flammability hazard characteristics
Non-combustible; toxic chromium-containing and sulfur oxide fumes are produced on the fire site;
storage and transportation features
Warehouse low temperature, ventilated, dry
fire extinguishing agent
Water, carbon dioxide, dry powder, sand
Last Update：2024-04-10 22:29:15
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View History
basic Chromic sulfat
2,4-Dimethoxybenzylamine hydrochloride
titaniuM(IV) 2-Methylpropan-2-olate
动力苯
Ethanamine, N-ethyl-N-[[2-(2-methoxyethoxy)ethoxy]methyl]-
Benzoic acid, 4-[(4-bromobenzoyl)oxy]-3-methoxy-, 4-octylphenyl ester
308069-08-1
Propanedinitrile, (phenylmethyl)-
2,4-Dimethoxybenzylamine hydrochloride
titaniuM(IV) 2-Methylpropan-2-olate
动力苯
Ethanamine, N-ethyl-N-[[2-(2-methoxyethoxy)ethoxy]methyl]-
Benzoic acid, 4-[(4-bromobenzoyl)oxy]-3-methoxy-, 4-octylphenyl ester
308069-08-1
Propanedinitrile, (phenylmethyl)-
Raw Materials for basic Chromic sulfat
Sodium dichromate dihydrate
Sucrose
SODIUM SULFATE DECAHYDRATE
Basic chromic sulfate
Sodium hydrogen sulfate,solution
Sucrose
SODIUM SULFATE DECAHYDRATE
Basic chromic sulfate
Sodium hydrogen sulfate,solution