CHROMIUM(VI) OXIDE | ICSC: 1194 (April 2013) |
Chromic trioxide Chromic acid Chromic anhydride |
CAS #: 1333-82-0 |
UN #: 1463 |
EC Number: 215-607-8 |
ACUTE HAZARDS | PREVENTION | FIRE FIGHTING | |
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FIRE & EXPLOSION | Not combustible but enhances combustion of other substances. Many reactions may cause fire or explosion. | NO contact with combustible substances or reducing agents. | NO water. In case of fire in the surroundings, use appropriate extinguishing media. |
PREVENT DISPERSION OF DUST! AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR! | |||
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SYMPTOMS | PREVENTION | FIRST AID | |
Inhalation | Burning sensation. Sore throat. Cough. Wheezing. Laboured breathing. | Use closed system or ventilation. | Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention. |
Skin | Redness. Pain. Skin burns. | Protective gloves. Protective clothing. | Remove contaminated clothes. First rinse with plenty of water for at least 15 minutes, then remove contaminated clothes and rinse again. Refer for medical attention . |
Eyes | Redness. Pain. Blurred vision. Severe burns. | Wear face shield or eye protection in combination with breathing protection. | First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. |
Ingestion | Nausea. Vomiting. Abdominal pain. Burning sensation. Diarrhoea. Shock or collapse. | Do not eat, drink, or smoke during work. Wash hands before eating. | Rinse mouth. Give one or two glasses of water to drink. Do NOT induce vomiting. Refer immediately for medical attention. |
SPILLAGE DISPOSAL | CLASSIFICATION & LABELLING |
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Personal protection: complete protective clothing including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Sweep spilled substance into sealable containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations. Do NOT absorb in saw-dust or other combustible absorbents. |
According to UN GHS Criteria DANGER
May intensify fire; oxidizerToxic if swallowed Fatal in contact with skin or if inhaled Causes severe skin burns and eye damage May cause allergy or asthma symptoms or breathing difficulties if inhaled May cause an allergic skin reaction May cause genetic defects May cause cancer May damage fertility or the unborn child Causes damage to the kidneys through prolonged or repeated exposure Causes damage to the nose through prolonged or repeated exposure if inhaled Very toxic to aquatic life with long lasting effects Transportation |
STORAGE | |
Provision to contain effluent from fire extinguishing. Separated from combustible substances, reducing agents, bases and food and feedstuffs. Well closed. Store in an area without drain or sewer access. | |
PACKAGING | |
Do not transport with food and feedstuffs. |
CHROMIUM(VI) OXIDE | ICSC: 1194 |
PHYSICAL & CHEMICAL INFORMATION | |
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Physical State; Appearance
Physical dangers
Chemical dangers
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Formula: CrO3 |
EXPOSURE & HEALTH EFFECTS | |
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Routes of exposure
Effects of short-term exposure
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Inhalation risk
Effects of long-term or repeated exposure
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OCCUPATIONAL EXPOSURE LIMITS |
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TLV: (as Cr(VI), inhalable fraction): 0.0002 mg/m3, as TWA; 0.0005 mg/m3 as STEL; A1 (confirmed human carcinogen); (skin); (DSEN); (RSEN). EU-OEL: (as Cr): 0.005 mg/m3 as TWA; (see Notes). MAK: (inhalable fraction): skin absorption (H); sensitization of skin (SH); carcinogen category: 1; germ cell mutagen group: 2 |
ENVIRONMENT |
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The substance is very toxic to aquatic organisms. The substance may cause long-term effects in the aquatic environment. It is strongly advised not to let the chemical enter into the environment. |
NOTES |
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Do NOT take working clothes home. Rinse contaminated clothing with plenty of water because of fire hazard. The symptoms of asthma often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential. Anyone who has shown symptoms of asthma due to this substance should avoid all further contact. Depending on the degree of exposure, periodic medical examination is suggested. EU-OEL limit value 0.010 mg/m3 until 17 January 2025. Limit value: 0.025 mg/m3 for welding or plasma cutting processes or similar work processes that generate fume until 17 January 2025. |
ADDITIONAL INFORMATION | ||
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EC Classification Symbol: O, T+, N; R: 45-46-9-24/25-26-35-42/43-48/23-62-50/53; S: 53-45-60-61; Note: E |
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See Also: Toxicological Abbreviations