- Chromium disilicide
Silver to black, odorless powder.
Registry Numbers and Inventories.
Melting point, °C
Solubility in water
Hazards and Protection.
Store in tightly closed containers, in a cool dry place.
Neoprene gloves, protective clothing and safety glasses.
Wear a NIOSH-approved dust-mist-fume cartridge respirator.
Wear a self-contained breathing apparatus and full protective clothing. Isolate the area where the spill occurred, insure proper ventilation is available and that water/moisture are kept out of the area. Vacuum up the spill using a high efficiency unit and place in a container for proper disposal. Take care not to raise dust.
Stable at normal temperatures and pressures.
Strong acids and strong bases.
Si, SiOx, Cr, CrOx.
Extinguish using dry chemical, CO2. Wear a self-contained breathing apparatus and full protective clothing to prevent contact with skin and eyes.
OSHA PEL 1 mg/m3 (as Cr)
The action of crystalline silica on the lungs results in the production of a diffuse, modular fibrosis in which the parenchyma and the lymphatic system are involved. This fibrosis is, to a certain extent, progressive, and may continue to increase for several years after exposure is terminated. When the pulmonary reserve is sufficiently reduced, the worker complains of shortness of breath or exertion. This is first and most common symptom in cases of uncomplicated silicosis.
May cause sneezing, coughing, difficulty breathing and irritation to the mucous membrane of the respiratory tract.
May cause itching irritation, inflammation and dermatitis.
May cause burning sensation, irritation, redness and watering of the eyes if comes in contact.
Administer 1-2 glasses of milk or water. DO NOT induce vomiting. Seek medical attention.
Remove victim to fresh air; give oxygen if breathing is difficult. Seek medical attention.
Brush material off skin and wash area with soap and water. Seek medical attention.
Flush eyes with lukewarm water for at least 15 minutes and seek medical attention.