**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****
+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
| 7782-99-2 |Sulfurous acid | 100 | 231-973-1 |
+----------------+--------------------------------------+----------+-----------+
Hazard Symbols: C
Risk Phrases: 34
**** SECTION 3 - HAZARDS IDENTIFICATION ****
EMERGENCY OVERVIEW
Causes burns.Corrosive.
Potential Health Effects
Eye:
Contact with liquid is corrosive to the eyes and causes severe
burns.
Skin:
Contact with liquid is corrosive and causes severe burns and
ulceration.
Ingestion:
May cause hemorrhaging of the digestive tract. May cause corrosion
and permanent tissue destruction of the esophagus and digestive
tract.
Inhalation:
May cause irritation of the respiratory tract with burning pain in
the nose and throat, coughing, wheezing, shortness of breath and
pulmonary edema.
Chronic:
No information found.
**** SECTION 4 - FIRST AID MEASURES ****
Eyes:
Immediately flush eyes with plenty of water for at least 15 minutes,
occasionally lifting the upper and lower eyelids. Get medical aid
immediately.
Skin:
Get medical aid immediately. Immediately flush skin with plenty of
water for at least 15 minutes while removing contaminated clothing
and shoes.
Ingestion:
Do not induce vomiting. If victim is conscious and alert, give 2-4
cupfuls of milk or water. Never give anything by mouth to an
unconscious person. Get medical aid immediately.
Inhalation:
Get medical aid immediately. Remove from exposure and move to fresh
air immediately. If not breathing, give artificial respiration. If
breathing is difficult, give oxygen.
Notes to Physician:
**** SECTION 5 - FIRE FIGHTING MEASURES ****
General Information:
As in any fire, wear a self-contained breathing apparatus in
pressure-demand, MSHA/NIOSH (approved or equivalent), and full
protective gear.
Extinguishing Media:
Use extinguishing media most appropriate for the surrounding fire.
**** SECTION 6 - ACCIDENTAL RELEASE MEASURES ****
General Information: Use proper personal protective equipment as indicated
in Section 8.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth),
then place in suitable container. Flush spill area with water. Spill
may be carefully neutralized with lime (calcium oxide, CaO).
**** SECTION 7 - HANDLING and STORAGE ****
Handling:
Wash thoroughly after handling. Remove contaminated clothing and
wash before reuse. Use with adequate ventilation. Do not get on skin
or in eyes. Do not ingest or inhale. Discard contaminated shoes.
Storage:
Store in a cool, dry place. Keep container closed when not in use.
**** SECTION 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION ****
Engineering Controls:
Facilities storing or utilizing this material should be equipped
with an eyewash facility and a safety shower. Use adequate
ventilation to keep airborne concentrations low.
Exposure Limits
CAS# 7782-99-2:
Personal Protective Equipment
Eyes:
Wear appropriate protective eyeglasses or chemical
safety goggles as described by OSHA's eye and face
protection regulations in 29 CFR 1910.133 or European
Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin
exposure.
Clothing:
Wear appropriate protective clothing to prevent skin
exposure.
Respirators:
Follow the OSHA respirator regulations found in 29
CFR 1910.134 or European Standard EN 149. Use a
NIOSH/MSHA or European Standard EN 149 approved
respirator if exposure limits are exceeded or if
irritation or other symptoms are experienced.
**** SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES ****
Physical State: Liquid
Color: clear, colorless
Odor: sulfurous odor
pH: Acid
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: Not available.
Autoignition Temperature: Not applicable.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: Not available.
Solubility in water: Soluble in water.
Specific Gravity/Density: 1.03
Molecular Formula: H2SO3
Molecular Weight: 82.0722
**** SECTION 10 - STABILITY AND REACTIVITY ****
Chemical Stability:
Oxidizes when exposed to air.
Conditions to Avoid:
Incompatible materials, exposure to air.
Incompatibilities with Other Materials:
Strong bases.
Hazardous Decomposition Products:
Sulfur oxides (SOx), including sulfur oxide and sulfur dioxide.
Hazardous Polymerization: Will not occur.
**** SECTION 11 - TOXICOLOGICAL INFORMATION ****
RTECS#:
CAS# 7782-99-2: WT2775000
LD50/LC50:
Not available.
Carcinogenicity:
Sulfurous acid -
Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.
**** SECTION 12 - ECOLOGICAL INFORMATION ****
**** SECTION 13 - DISPOSAL CONSIDERATIONS ****
Products which are considered hazardous for supply are classified as Special
Waste and the disposal of such chemicals is covered by regulations which may
vary according to location. Contact a specialist disposal company or the local
waste regulator for advice. Empty containers must be decontaminated before
returning for recycling.
**** SECTION 14 - TRANSPORT INFORMATION ****
IATA
Shipping Name: SULPHUROUS ACID
Hazard Class: 8
UN Number: 1833
Packing Group: II
IMO
Shipping Name: SULPHUROUS ACID
Hazard Class: 8
UN Number: 1833
Packing Group: II
RID/ADR
Shipping Name: SULPHUROUS ACID
Hazard Class: 8
UN Number: 1833
Packing group: II
**** SECTION 15 - REGULATORY INFORMATION ****
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: C
Risk Phrases:
R 34 Causes burns.
Safety Phrases:
S 26 In case of contact with eyes, rinse immediately
with plenty of water and seek medical advice.
WGK (Water Danger/Protection)
CAS# 7782-99-2: 1
Canada
CAS# 7782-99-2 is listed on Canada's DSL List.
CAS# 7782-99-2 is listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 7782-99-2 is listed on the TSCA inventory.
The information above is believed to be accurate and represents the best
information currently available to us. However, we make no warranty of
merchantability or any other warranty, express or implied, with respect to
such information, and we assume no liability resulting from its use. Users
should make their own investigations to determine the suitability of the
information for their particular purposes. In no way shall the company be
liable for any claims, losses, or damages of any third party or for lost
profits or any special, indirect, incidental, consequential or exemplary
damages, howsoever arising, even if the company has been advised of
the possibility of such damages.
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