Concise International Chemical Assessment Document 33
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- Bu səhifədəki naviqasiya:
- Routes of exposure
- Effects of short-term exposure
- PHYSICAL PROPERTIES ENVIRONMENTAL DATA
- SEE IMPORTANT INFORMATION ON THE BACK. IPCS
- TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/SYMPTOMS PREVENTION FIRST AID/FIRE FIGHTING
- STRICT HYGIENE! Inhalation
- SPILLAGE DISPOSAL PACKAGING LABELLING
- EMERGENCY RESPONSE STORAGE
- Occupational exposure limits
Melting point: 113°C (see Notes) Density: 3.86 g/cm 3 Solubility in water, g/100 ml at 26°C: 37.5 (good) LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information ©IPCS 2000 0615 BARIUM CHLORIDE, DIHYDRATE IMPORTANT DATA Physical State; Appearance WHITE SOLID IN VARIOUS FORMS Chemical dangers The substance decomposes on heating producing toxic fumes. Occupational exposure limits TLV (as Ba): 0.5 mg/m 3 (ACGIH 1999). Routes of exposure The substance can be absorbed into the body by inhalation of its aerosol and by ingestion.
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed, especially if powdered. Effects of short-term exposure The substance irritates the eyes, the skin and the respiratory tract. The substance may cause effects on the nervous system. Exposure could cause hypokalaemia, resulting in cardiac disorders and muscular disorders. Exposure may result in death.
PHYSICAL PROPERTIES ENVIRONMENTAL DATA The substance is harmful to aquatic organisms. NOTES The apparent melting point caused by loss of crystal water is given. Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. Also consult ICSC 0614 (Barium chloride). ADDITIONAL INFORMATION Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission © IPCS 2000
International Programme on Chemical Safety BARIUM OXIDE 0778 October 1999 CAS No: 1304-28-5 RTECS No: CQ9800000 UN No: 1884 EC No: 056-002-00-7 Barium monoxide Barium protoxide Calcined baryta BaO
Molecular mass: 153.3 TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/SYMPTOMS PREVENTION FIRST AID/FIRE FIGHTING FIRE Not combustible. In case of fire in the surroundings: NO water. EXPLOSION EXPOSURE PREVENT DISPERSION OF DUST! STRICT HYGIENE! Inhalation Cough. Sore throat. Local exhaust or breathing protection. Fresh air, rest. Refer for medical attention. Skin Redness. Pain. Protective gloves. Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention. Eyes Redness. Pain. Safety spectacles, or eye protection in combination with breathing protection if powder. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Abdominal pain. Diarrhoea. Nausea. Vomiting. Muscle paralysis. Cardiac arrhythmia. Hypertension. Death. Do not eat, drink, or smoke during work. Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Give plenty of water to drink. Refer for medical attention.
Sweep spilled substance into containers. Carefully collect remainder, then remove to safe place. Do NOT let this chemical enter the environment. (Extra personal protection: P2 filter respirator for harmful particles). Xn Symbol R: 20/22
S: (2-)28 Note: A
UN Hazard Class: 6.1 UN Pack Group: III Airtight. Do not transport with food and feedstuffs. EMERGENCY RESPONSE STORAGE Transport Emergency Card: TEC (R)-61G64c Separated from food and feedstuffs. Dry. Well closed.
Boiling point: about 2000°C Melting point: 1923°C Density: 5.7 g/cm 3 Solubility in water, g/100 ml at 20°C: 3.8 LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information ©IPCS 2000 0778 BARIUM OXIDE IMPORTANT DATA Physical State; Appearance YELLOWISH-WHITE SOLID IN VARIOUS FORMS Chemical dangers The solution in water is a medium strong base. Reacts violently with water, dinitrogen tetraoxide, hydroxylamine, sulfur trioxide, and hydrogen sulfide causing fire and explosion hazard. Occupational exposure limits TLV (as Ba): 0.5 mg/m 3 (as TWA) (ACGIH 1999). MAK as Ba: 0.5 ppm; (1996) Routes of exposure The substance can be absorbed into the body by inhalation of its aerosol and by ingestion.
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed. Effects of short-term exposure The substance irritates the eyes, the skin and the respiratory tract. The substance may cause effects on the nervous system. Exposure could cause hypokalaemia, resulting in cardiac disorders and muscular disorders. Exposure may result in death.
PHYSICAL PROPERTIES ENVIRONMENTAL DATA The substance is harmful to aquatic organisms. NOTES Reacts violently with fire extinguishing agents such as water. Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. NEVER pour water into this substance; when dissolving or diluting always add it slowly to the water. ADDITIONAL INFORMATION Yüklə 0,67 Mb. Dostları ilə paylaş:
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