SELENIOUS ACID | ICSC: 0945 (March 2000) |
Monohydrated selenium dioxide Selenous acid |
CAS #: 7783-00-8 |
UN #: 3283 |
EC Number: 231-974-7 |
ACUTE HAZARDS | PREVENTION | FIRE FIGHTING | |
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FIRE & EXPLOSION | Not combustible. Gives off irritating or toxic fumes (or gases) in a fire. | In case of fire in the surroundings, use appropriate extinguishing media. |
PREVENT DISPERSION OF DUST! STRICT HYGIENE! | |||
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SYMPTOMS | PREVENTION | FIRST AID | |
Inhalation | Burning sensation. Cough. Laboured breathing. Sore throat. Shortness of breath. Symptoms may be delayed. See Notes. | Use ventilation, local exhaust or breathing protection. | Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention. |
Skin | Redness. Pain. Blisters. Skin burns. | Protective gloves. Protective clothing. | Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention . |
Eyes | Redness. Pain. Severe deep 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 | Abdominal pain. Burning sensation. Sore throat. Diarrhoea. Nausea. Vomiting. Shock or collapse. | Do not eat, drink, or smoke during work. Wash hands before eating. | Rinse mouth. Do NOT induce vomiting. Refer for medical attention . |
SPILLAGE DISPOSAL | CLASSIFICATION & LABELLING |
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Evacuate danger area! Consult an expert! Personal protection: complete protective clothing including self-contained breathing apparatus. Cover the spilled material with dry lime or soda ash. Carefully collect remainder. Then store and dispose of according to local regulations. |
According to UN GHS Criteria Transportation |
STORAGE | |
Separated from food and feedstuffs. Dry. Keep in a well-ventilated room. | |
PACKAGING | |
SELENIOUS ACID | ICSC: 0945 |
PHYSICAL & CHEMICAL INFORMATION | |
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Physical State; Appearance
Physical dangers
Chemical dangers
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Formula: H2SeO3 |
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: 0.2 mg/m3, as TWA. MAK: (as Se, inhalable fraction): 0.02 mg/m3; peak limitation category: II(8); carcinogen category: 3; pregnancy risk group: C |
ENVIRONMENT |
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The substance is harmful to aquatic organisms. |
NOTES |
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The symptoms of lung oedema 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. Immediate administration of an appropriate inhalation therapy by a doctor, or by an authorized person, should be considered. |
ADDITIONAL INFORMATION | ||
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EC Classification Symbol: T, N; R: 23/25-33-50/53; S: (1/2)-20/21-28-45-60-61; Note: A |
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See Also: Toxicological Abbreviations