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[List of Chemicals] [Risk Notes] [Risk Phrases] [Safety Phrases] [Danger Symbols] |  |
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TYPES OF
HAZARD / EXPOSURE |
ACUTE HAZARDS / SYMPTOMS | PREVENTION | FIRST AID / FIRE FIGHTING |
| FIRE |
Extremely flammable.
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NO open flames, NO sparks, and NO smoking.
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Shut off supply; if not possible and no risk to surroundings, let the fire burn itself out; in other cases extinguish with powder, carbon dioxide.
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| EXPLOSION |
Gas/air mixtures are explosive.
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Closed system, ventilation, explosion-proof electrical equipment and lighting.
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Combat fire from a sheltered position.
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| EXPOSURE |
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STRICT HYGIENE!
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| Inhalation |
Cough. Headache. Nausea. Sore throat.
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Ventilation, local exhaust, or breathing protection.
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Fresh air, rest. Refer for medical attention.
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| Skin |
Redness. ON CONTACT WITH LIQUID: FROSTBITE.
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Cold-insulating gloves.
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ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Rinse skin with plenty of water or shower.
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| Eyes |
Redness. Pain.
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Safety goggles, or eye protection in combination with breathing protection.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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| Ingestion |
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| SPILLAGE DISPOSAL | PACKAGING & LABELLING |
Evacuate danger area! Consult an expert! Ventilation. Remove gas with fine water spray (extra personal protection: self-contained breathing apparatus).
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UN Hazard Class: 2.1
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| EMERGENCY RESPONSE | STORAGE |
NFPA Code: H2; F4; R3;
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Fireproof.
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| IMPORTANT DATA | |
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PHYSICAL STATE; APPEARANCE:
COLOURLESS GAS , WITH CHARACTERISTIC ODOUR. PHYSICAL DANGERS: The gas is heavier than air. CHEMICAL DANGERS: The substance may spontaneously ignite on contact with air. The substance decomposes on heating or on burning producing silicon and hydrogen , causing fire and explosion hazard. The substance is a strong reducing agent and reacts with oxidants. Reacts slowly with water. Reacts with potassium hydroxide solution and halogens. OCCUPATIONAL EXPOSURE LIMITS: TLV (as TWA): 5 ppm; 6.6 mg/m 3 (ACGIH 1996). |
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation. INHALATION RISK: A harmful concentration of this gas in the air will be reached very quickly on loss of containment. EFFECTS OF SHORT-TERM EXPOSURE: The substance irritates the eyes, the skin and the respiratory tract. Rapid evaporation of the liquid may cause frostbite. |
| PHYSICAL PROPERTIES | |
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Boiling point: -112°C
Melting point: -185°C Solubility in water: slow reaction Relative vapour density (air = 1): 1.3 |
Explosive limits, vol% in air: 1.37-100
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| ENVIRONMENTAL DATA | |
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| NOTES | |
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