| SULFURIC
ACID |
ICSC:
0362
October 2000 |
|
Sulfuric
acid 100%
Oil of vitriol |
|
CAS
No: 7664-93-9
RTECS No: WS5600000
UN No: 1830
EC No: 016-020-00-8 |
|
H2SO4
Molecular mass: 98.1 |
|
TYPES
OF
HAZARD /
EXPOSURE |
ACUTE HAZARDS /
SYMPTOMS |
PREVENTION |
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 if indicated.
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. (Extra personal protection: complete protective clothing
including self-contained breathing apparatus). Do NOT let this chemical
enter the environment. |
C
Symbol
R: 35
S: (1/2-)26-30-45
Note: B
UN Hazard Class: 8
UN Pack Group: II
|
Unbreakable packaging; put breakable packaging into closed unbreakable
container. Do not transport with food and feedstuffs.
|
| EMERGENCY
RESPONSE |
STORAGE |
Transport Emergency
Card: TEC (R)-10B
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. |
| 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/m³ (as TWA);
3 mg/m³ (as STEL) A2 sulfuric acid contained in strong inorganic
acid mists (ACGIH 2000).
MAK: 1 mg/m³; inhalable fraction of aerosol (1999).
|
Routes of
exposure
The substance can be absorbed into the body by inhalation of its aerosol
and by ingestion.
Inhalation risk
Evaporation at 20°C 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 |
ENVIRONMENTAL
DATA |
Boiling point
(decomposes): 340°C
Melting point: 10°C
Relative density (water = 1): 1.8
Solubility in water: miscible
Vapour pressure, kPa at 146°C: 0.13
Relative vapour density (air = 1): 3.4 |
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. |
|