Oxychlorure chromique
Chromyl chloride
CAS: 14977-61-8
Molecular Formula: Cl2CrO2
Oxychlorure chromique - Names and Identifiers
Oxychlorure chromique - Physico-chemical Properties
| Molecular Formula | Cl2CrO2 |
| Molar Mass | 154.9 |
| Density | 1.911 g/mL at 25 °C (lit.) |
| Melting Point | -96.5 °C (lit.) |
| Boling Point | 117 °C (lit.) |
| Flash Point | 117°C |
| Water Solubility | Soluble in carbon tetrachloride, carbon disulfide, benzene, nitrobenzene, chloroform, and POCL3. Insoluble in water(Reacts). |
| Appearance | liquid |
| Specific Gravity | 1.911 |
| Color | red |
| Exposure Limit | ACGIH: TWA 0.0001 ppm; STEL 0.00025 ppm (Skin)NIOSH: TWA 0.0002 mg/m3 |
| Merck | 14,2248 |
| Sensitive | Moisture Sensitive |
Oxychlorure chromique - Risk and Safety
| Risk Codes | R49 - May cause cancer by inhalation R46 - May cause heritable genetic damage R8 - Contact with combustible material may cause fire R35 - Causes severe burns R43 - May cause sensitization by skin contact R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R34 - Causes burns R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. R45 - May cause cancer |
| Safety Description | S53 - Avoid exposure - obtain special instructions before use. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S60 - This material and its container must be disposed of as hazardous waste. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S27 - Take off immediately all contaminated clothing. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S17 - Keep away from combustible material. |
| UN IDs | UN 3244 8/PG 2 |
| WGK Germany | 3 |
| RTECS | GB5775000 |
| FLUKA BRAND F CODES | 8-10-21 |
| TSCA | Yes |
| Hazard Class | 8 |
| Packing Group | I |
Oxychlorure chromique - References
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| production method | 1.150g of chromium trioxide was dissolved in of water, of concentrated hydrochloric acid was added, and the mixture was cooled to 0 °c with a refrigerant. Under stirring, 450ml of concentrated sulfuric acid was added dropwise. At this time, the temperature of the solution should be kept below 10 °c. After completion of the reaction, the solution was poured into a separatory funnel, and the lower portion of the solution was separated and stored in a closed container. The yield was 189g(81%). A rectification device was installed and the above solution was subjected to fractional distillation, and a fraction (65% of the crude product) at 115 to 116 ° C. (0.9796 ×) was collected. During storage, dry air should be introduced to completely remove the hydrogen chloride, which is then distilled and enclosed in ampoules and stored in the dark. Due to the product of the erosion of the grease, resulting in the solidification of the grease, so that the activity of the mill is blocked, so it is appropriate to use a non-lubricating grease of polytetrafluoroethylene. |
| category | corrosive article |
| flammability hazard characteristics | reaction with water to generate toxic gases such as hydrogen chloride and chlorine |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; It is stored separately from alkalis and food additives |
| fire extinguishing agent | dry sand, dry stone powder; No water |
| Occupational Standard | 0.025 PPM TLV-TWA; TWA 0.5 mg (chromium)/m3 |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
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