CHROMIC MIXTURE
CHROMIC MIXTURE
CAS: 65272-71-1
Molecular Formula: Cr2H5KO11S
CHROMIC MIXTURE - Names and Identifiers
| Name | CHROMIC MIXTURE |
| Synonyms | CHROMIC MIXTURE Chromschwefelsure CHROMOSULFURIC ACID, FOR CLEANING OF GLA SS VESSELS |
| CAS | 65272-71-1 |
| EINECS | 613-764-0 |
CHROMIC MIXTURE - Physico-chemical Properties
| Molecular Formula | Cr2H5KO11S |
| Molar Mass | 356.18 |
| Density | 1.84g/mLat 20°C(lit.) |
| Melting Point | 173°C (dec.)(lit.) |
| Boling Point | 330°C/760mmHg |
| Appearance | Liquid |
| Color | Red-brown to dark brown |
CHROMIC MIXTURE - Risk and Safety
| Risk Codes | R45 - May cause cancer R46 - May cause heritable genetic damage R23 - Toxic by inhalation R35 - Causes severe burns R42/43 - May cause sensitization by inhalation and skin contact. R48/20 - R52/53 - Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R61 - May cause harm to the unborn child R60 - May impair fertility |
| Safety Description | S53 - Avoid exposure - obtain special instructions before use. S23 - Do not breathe vapour. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. |
| UN IDs | UN 1830 8/PG 2 |
| WGK Germany | 2 |
| RTECS | UV1225000 |
| FLUKA BRAND F CODES | 8 |
| HS Code | 28112900 |
CHROMIC MIXTURE - Introduction
Open Data Unverified Data
Chromic mixture, or chromic acid cleaning solution, is a solution containing chromic acid, typically a mixture of chromic acid, sulfuric acid, and water. It is an orange to red liquid with a strong, pungent odor.
The main uses of chromic mixture are for cleaning, removing organic matter, and clearing metal surfaces in laboratory settings. It serves as a powerful oxidizing agent, enabling it to oxidize organic compounds and effectively clean laboratory glassware, remove stains, and eliminate residues.
The preparation of chromic mixture involves slowly adding chromic acid to concentrated sulfuric acid, and then diluting with the appropriate amount of water to reach the desired concentration.
Safety precautions are crucial when using chromic mixture, as it is a potent oxidizing agent with strong irritating properties. Proper personal protective equipment such as gloves and safety goggles should be used, and operations should be carried out in a well-ventilated area. Additionally, it should be kept away from flammable substances and combustible gases, as its use with organic materials may produce toxic fumes. Proper disposal of waste solution is also necessary to prevent harm to the environment and human health.
Last Update：2024-04-09 19:43:38
