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SULFURIC ACID ICSC: 0362
Date of Peer Review: October 2000

Sulfuric acid 100%
Oil of vitriol
CAS # 7664-93-9 H2SO4
RTECS # WS5600000 Molecular mass: 98.1
UN # 1830
EC Index # 016-020-00-8
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Not combustible. Many reactions may cause fire or explosion. Gives off irritating or toxic fumes (or gases) in a fire.
NO contact with flammable substances. NO contact with combustibles.
NO water. In case of fire in the surroundings: powder, AFFF, foam, carbon dioxide.
EXPLOSION Risk of fire and explosion on contact with base(s), combustible substances, oxidants, reducing agents or water.

In case of fire: keep drums, etc., cool by spraying with water but NO direct contact with water.
EXPOSURE
PREVENT GENERATION OF MISTS! AVOID ALL CONTACT!
IN ALL CASES CONSULT A DOCTOR!
Inhalation Corrosive. Burning sensation. Sore throat. Cough. Laboured breathing. Shortness of breath. Symptoms may be delayed (see Notes).
Ventilation, local exhaust, or breathing protection.
Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention.
Skin Corrosive. Redness. Pain. Blisters. Serious skin burns.
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
Eyes Corrosive. Redness. Pain. Severe deep burns.
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 take to a doctor.
Ingestion Corrosive. Abdominal pain. Burning sensation. Shock or collapse.
Do not eat, drink, or smoke during work.
Rinse mouth. Do NOT induce vomiting. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Consult an expert! Evacuate danger area! Do NOT absorb in saw-dust or other combustible absorbents. Personal protection: complete protective clothing including self-contained breathing apparatus. Do NOT let this chemical enter the environment.
Unbreakable packaging; put breakable packaging into closed unbreakable container. Do not transport with food and feedstuffs.
EU Classification
Symbol: C
R: 35
S: (1/2-)-26-30-45
Note: [B]
UN Classification
UN Hazard Class: 8
UN Pack Group: II
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-80S1830 or 80GC1-II+III
NFPA Code: H 3; F 0; R 2; W
Separated from combustible and reducing substances, strong oxidants, strong bases, food and feedstuffs, incompatible materials. See Chemical Dangers. May be stored in stainless steel containers. Store in an area having corrosion resistant concrete floor.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 2005

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SULFURIC ACID ICSC: 0362
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS, OILY, HYGROSCOPIC LIQUID, WITH NO ODOUR.

CHEMICAL DANGERS:
The substance is a strong oxidant and reacts violently with combustible and reducing materials. The substance is a strong acid, it reacts violently with bases and is corrosive to most common metals forming a flammable/explosive gas (hydrogen - see ICSC 0001). Reacts violently with water and organic materials with evolution of heat (see Notes). Upon heating, irritating or toxic fumes (or gases) (sulfur oxides) are formed.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 1 mg/m as TWA, 3 mg/m as STEL; sulfuric acid contained in strong inorganic acid mists A2 (suspected human carcinogen); (ACGIH 2004).
MAK: (Inhalable fraction) 0.1 mg/m; Peak limitation category: I(1); Carcinogen category: 4; Pregnancy risk group: C; (DFG 2004).
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its aerosol and by ingestion.

INHALATION RISK:
Evaporation at 20C is negligible; a harmful concentration of airborne particles can, however, be reached quickly on spraying.

EFFECTS OF SHORT-TERM EXPOSURE:
Corrosive. The substance is very corrosive to the eyes, the skin and the respiratory tract. Corrosive on ingestion. Inhalation of an aerosol of this substance may cause lung oedema (see Notes).

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Lungs may be affected by repeated or prolonged exposure to an aerosol of this substance. Risk of tooth erosion upon repeated or prolonged exposure to an aerosol of this substance. Strong inorganic acid mists containing this substance are carcinogenic to humans.
PHYSICAL PROPERTIES
Boiling point (decomposes): 340C
Melting point: 10C
Relative density (water = 1): 1.8
Solubility in water: miscible
Vapour pressure, kPa at 146C: 0.13
Relative vapour density (air = 1): 3.4
ENVIRONMENTAL DATA
The substance is harmful to aquatic organisms.
NOTES
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. NEVER pour water into this substance; when dissolving or diluting always add it slowly to the water. Other UN numbers: UN1831 Sulfuric acid, fuming, hazard class 8, subsidiary hazard 6.1, pack group I; UN1832 Sulfuric acid, spent, Hazard class 8, Pack group II. Card has been partly updated in October 2005. See sections Occupational Exposure Limits, Emergency Response.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 2005
See Also:
        Sulfuric acid (CHEMINFO)
        Sulfuric acid (ICSC)