|Sulfuric acid, fuming|
Mixture of sulfuric acid and sulfur trioxide
| CAS #: 8014-95-7|
| UN #: 1831
|ACUTE HAZARDS||PREVENTION||FIRE FIGHTING|
|FIRE & EXPLOSION||Not combustible. Many reactions may cause fire or explosion. Gives off irritating or toxic fumes (or gases) in a fire. Risk of fire and explosion on contact with bases, combustible substances, reducing agents, water or organic materials.||NO contact with incompatible materials: See Chemical Dangers||NO water. In case of fire in the surroundings, use appropriate extinguishing media. In case of fire: keep drums, etc., cool by spraying with water. NO direct contact of the substance with water.|
|PREVENT GENERATION OF MISTS! AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR!|
|Inhalation||Cough. Sore throat. Burning sensation. Shortness of breath. Laboured breathing.||Use ventilation, local exhaust or breathing protection.||Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer immediately for medical attention.|
|Skin||Redness. Pain. Blisters. Serious skin burns.||Protective gloves. Protective clothing. Apron.||Wear protective gloves when administering first aid. First rinse with plenty of water for at least 15 minutes, then remove contaminated clothes and rinse again. Refer immediately for medical attention.|
|Eyes||Redness. Pain. Blurred vision. Severe burns.||Wear face shield or eye protection in combination with breathing protection.||Rinse with plenty of water for several minutes (remove contact lenses if easily possible). Refer immediately for medical attention.|
|Ingestion||Burns in mouth and throat. Burning sensation behind the breastbone. Abdominal pain. Vomiting. Shock or collapse.||Do not eat, drink, or smoke during work.||Rinse mouth. Give nothing to drink. Do NOT induce vomiting. Refer immediately for medical attention.|
|SPILLAGE DISPOSAL||CLASSIFICATION & LABELLING|
|Evacuate danger area! Consult an expert! Personal protection: chemical protection suit including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Do NOT absorb in saw-dust or other combustible absorbents. Collect leaking liquid in sealable containers. Absorb remaining liquid in dry sand or inert absorbent. Then store and dispose of according to local regulations. Cautiously neutralize remainder with lime or soda ash.||
According to UN GHS Criteria
DANGERFatal if inhaled
Causes severe skin burns and eye damage
May cause respiratory irritation
May be corrosive to metals
|Dry. Separated from food and feedstuffs and incompatible materials. See Chemical Dangers. Store only in original packaging. Ventilation along the floor.|
Put breakable packaging into closed unbreakable container.
Do not transport with food and feedstuffs.
|PHYSICAL & CHEMICAL INFORMATION|
Physical State; Appearance
|EXPOSURE & HEALTH EFFECTS|
Routes of exposure
Effects of short-term exposure
Effects of long-term or repeated exposure
|OCCUPATIONAL EXPOSURE LIMITS|
|The substance is harmful to aquatic organisms.|
|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.
IARC considers mists of strong inorganic acid to be carcinogenic (group 1). However there is no information available on the carcinogenicity of other physical forms of this substance. Therefore no classification for carcinogenicity under GHS has been applied.
NEVER pour water into this substance; when dissolving or diluting always add it slowly to the water.
The amount of free sulfur trioxide may vary, which can change the physical properties, and therefore no figure for the molecular weight is given.
Reported vapour pressure values differ greatly (from 0.3 to 21.9 kPa).
Boiling points of solutions (% SO_3): 138°C (20% ), 116°C (30%), 60°C (65%).
Melting points (% SO_3): 2°C (20%), 21°C (30%), 5°C (65%).
See ICSCs 0362 and 1202.
Symbol: C; R: 14-35-37; S: (1/2)-26-30-45; Note: B
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