Chromic chloride anhydrous
Chromium(III) chloride
CAS: 10025-73-7
Molecular Formula: Cl3Cr
Chromic chloride anhydrous - Names and Identifiers
Chromic chloride anhydrous - Physico-chemical Properties
| Molecular Formula | Cl3Cr |
| Molar Mass | 158.36 |
| Density | 2.87g/mLat 25°C(lit.) |
| Melting Point | 1152 °C |
| Boling Point | 1300°C |
| Water Solubility | Soluble in alcohol, water. |
| Vapor Presure | 0.001Pa at 20℃ |
| Appearance | Purple flakes |
| Specific Gravity | 2.87 |
| Color | Violet |
| Exposure Limit | NIOSH: IDLH 25 mg/m3; TWA 0.5 mg/m3 |
| Merck | 14,2222 |
| Storage Condition | Store below +30°C. |
| Stability | hygroscopic |
| Sensitive | Hygroscopic |
| MDL | MFCD00010948 |
| Physical and Chemical Properties | Trait purple monoclinic crystals. melting point 83 ℃ relative density 1.76 solubility soluble in water, ethanol, acetone-soluble, insoluble in ether. |
| Use | Mainly used as mordant and catalyst |
Chromic chloride anhydrous - Risk and Safety
| Risk Codes | R22 - Harmful if swallowed R26 - Very Toxic by inhalation |
| Safety Description | S24/25 - Avoid contact with skin and eyes. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37 - Wear suitable protective clothing and gloves. S28 - After contact with skin, wash immediately with plenty of soap-suds. |
| UN IDs | UN3260 |
| WGK Germany | 1 |
| RTECS | GB5425000 |
| TSCA | Yes |
| HS Code | 28273985 |
| Hazard Class | 8 |
| Packing Group | III |
| Toxicity | MLD in frogs, mice, rabbits (mg/kg): 187, 801, 288 i.v. (Cavalli) |
Chromic chloride anhydrous - Nature
Open Data Verified Data
purple monoclinic crystals. The relative density was 1. 76. Melting point 83. Soluble in water, ethanol, acetone-soluble, insoluble in ether. Deliquescence. Toxic!
Last Update：2024-01-02 23:10:35
Chromic chloride anhydrous - Preparation Method
Open Data Verified Data
chromium carbonate method: the sodium dichromate solution is added into a lead-lined or glass-lined reactor with a stirrer, sulfuric acid is slowly added under stirring for acidification, and then molasses reducing agent is added for reduction reaction to generate chromium sulfate, filtration, the reaction of chromium sulfate and soda ash to generate chromium carbonate, filtration, washing with water, and then with hydrochloric acid reaction to generate chromium trichloride. After concentration, release of cooling solidification, grinding, preparation of chromium trichloride products.
Last Update：2022-01-01 11:00:36
Chromic chloride anhydrous - Use
Open Data Verified Data
printing and dyeing industry as mordant. The chemical industry is used for the production of other chromium salts. The pigment industry is used to produce a variety of chromium-containing pigments. Organic synthesis is used in the manufacture of chromium-containing catalysts.
Last Update：2022-01-01 11:00:36
Chromic chloride anhydrous - Safety
Open Data Verified Data
glass bottle packaging, each bottle of net weight 500g. Should be stored in a cool, dry warehouse. The package is sealed to prevent moisture. Protection against rain and sun exposure during transport. During loading and unloading, care should be taken to prevent the packaging from breaking and becoming damp. Fire, water, sand, carbon dioxide fire extinguishing. Toxicity and protection: see chromic anhydride.
Last Update：2022-01-01 11:00:37
Chromic chloride anhydrous - Reference Information
| LogP | -3 at 20℃ |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | chromium trichloride (chemical formula: CrCl3) is a commonly used mordant and catalyst, easy to deliquesce, easy to sublimate, and easy to be oxidized by oxygen at high temperature. There are two kinds of anhydrous and hexahydrate. Chromium trichloride anhydrous is a strongly luminous purple crystal, almost insoluble in water. Chromium trichloride hexahydrate is a complex with three hydrated isomers: purple, light green and dark green solids. Generally bought are dark green isomers. Chromium trichloride crystals contain CrCl6 octahedral units connected into layers. There are spiral dislocations in the structure and do not contain metal-metal bonds. It is isomorphic to chromium triiodide. Anhydrous chromium trichloride is an important raw material in organometallic chemistry. It can be used as a raw material to produce many organic chromium compounds, such as diphenyl chromium, which is similar in structure to ferrocene. Chromium trichloride is also the starting material for many chromium (III) complexes. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 21:54:55
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