SAFETY DATA SHEET
Creation Date 03-Jun-2014 Revision Date 18-Jan-2018 Revision Number 3
1. Identification
Product Name Sulfurous Acid (Certified ACS)
Cat No. : A307-1
CAS-No 7782-99-2
Synonyms Sulfur dioxide, solution
Recommended Use Laboratory chemicals.
Uses advised against Not for food, drug, pesticide or biocidal product use
Details of the supplier of the safety data sheet
Company
Fisher Scientific
One Reagent Lane
Fair Lawn, NJ 07410
Tel: (201) 796-7100
Emergency Telephone Number
CHEMTRECÒ, Inside the USA: 800-424-9300
CHEMTRECÒ, Outside the USA: 001-703-527-3887
2. Hazard(s) identification
Classification
This chemical is considered hazardous by the 2012 OSHA Hazard Communication Standard (29 CFR 1910.1200)
Corrosive to metals Category 1
Skin Corrosion/irritation Category 1
Serious Eye Damage/Eye Irritation Category 1
Specific target organ toxicity (single exposure) Category 3
Target Organs - Respiratory system.
Label Elements
Signal Word
Danger
Hazard Statements
May be corrosive to metals
Causes severe skin burns and eye damage
May cause respiratory irritation
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Precautionary Statements
Prevention
Do not breathe dust/fume/gas/mist/vapors/spray
Wash face, hands and any exposed skin thoroughly after handling
Wear protective gloves/protective clothing/eye protection/face protection
Use only outdoors or in a well-ventilated area
Response
Immediately call a POISON CENTER or doctor/physician
Inhalation
IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
Skin
IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower
Wash contaminated clothing before reuse
Eyes
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing
Ingestion
IF SWALLOWED: Rinse mouth. DO NOT induce vomiting
Storage
Store locked up
Store in a well-ventilated place. Keep container tightly closed
Disposal
Dispose of contents/container to an approved waste disposal plant
Hazards not otherwise classified (HNOC)
None identified
3. Composition/Information on Ingredients
Component CAS-No Weight %
Sulfurous acid 7782-99-2 100
4. First-aid measures
Eye Contact Rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes.
Immediate medical attention is required.
Skin Contact Wash off immediately with plenty of water for at least 15 minutes. Immediate medical
attention is required.
Inhalation Move to fresh air. Do not use mouth-to-mouth method if victim ingested or inhaled the
substance; give artificial respiration with the aid of a pocket mask equipped with a one-way
valve or other proper respiratory medical device. Immediate medical attention is required. If
not breathing, give artificial respiration.
Ingestion Do not induce vomiting. Call a physician or Poison Control Center immediately.
Most important symptoms and Causes burns by all exposure routes. Product is a corrosive material. Use of gastric
effects lavage or emesis is contraindicated. Possible perforation of stomach or esophagus should
be investigated: Ingestion causes severe swelling, severe damage to the delicate tissue
and danger of perforation
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Notes to Physician Treat symptomatically
5. Fire-fighting measures
Suitable Extinguishing Media Substance is nonflammable; use agent most appropriate to extinguish surrounding fire.
Unsuitable Extinguishing Media No information available
Flash Point Not applicable
Method - No information available
Autoignition Temperature No information available
Explosion Limits
Upper No data available
Lower No data available
Sensitivity to Mechanical Impact No information available
Sensitivity to Static Discharge No information available
Specific Hazards Arising from the Chemical
Corrosive Material. Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or
toxic fumes. Keep product and empty container away from heat and sources of ignition.
Hazardous Combustion Products
Sulfur oxides
Protective Equipment and Precautions for Firefighters
As in any fire, wear self-contained breathing apparatus pressure-demand, MSHA/NIOSH (approved or equivalent) and full
protective gear.
NFPA
Health Flammability Instability Physical hazards
3 0 1 N/A
6. Accidental release measures
Personal Precautions Use personal protective equipment. Evacuate personnel to safe areas. Ensure adequate
ventilation. Avoid contact with skin, eyes and clothing.
Environmental Precautions Avoid release to the environment.
Methods for Containment and Clean Soak up with inert absorbent material. Keep in suitable, closed containers for disposal.
Up
7. Handling and storage
Handling Use only under a chemical fume hood. Wear personal protective equipment. Do not get in
eyes, on skin, or on clothing. Do not breathe vapors or spray mist. Do not ingest.
Storage Keep containers tightly closed in a dry, cool and well-ventilated place. Corrosives area.
8. Exposure controls / personal protection
Exposure Guidelines This product does not contain any hazardous materials with occupational exposure
limitsestablished by the region specific regulatory bodies.
Engineering Measures None under normal use conditions.
Personal Protective Equipment
Eye/face Protection 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
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EN166.
Skin and body protection Wear appropriate protective gloves and clothing to prevent skin exposure.
Respiratory Protection No protective equipment is needed under normal use conditions.
Hygiene Measures Handle in accordance with good industrial hygiene and safety practice.
9. Physical and chemical properties
Physical State Liquid
Appearance Clear
Odor rotten-egg like
Odor Threshold No information available
pH 2.0 Acidic
Melting Point/Range No data available
Boiling Point/Range No information available
Flash Point Not applicable
Evaporation Rate No information available
Flammability (solid,gas) Not applicable
Flammability or explosive limits
Upper No data available
Lower No data available
Vapor Pressure No information available
Vapor Density 2.8
Specific Gravity 1.03
Solubility Soluble in water
Partition coefficient; n-octanol/water No data available
Autoignition Temperature No information available
Decomposition Temperature No information available
Viscosity No information available
Molecular Formula H2SO3
Molecular Weight 82.0722
10. Stability and reactivity
Reactive Hazard None known, based on information available
Stability Stable under normal conditions. Air sensitive.
Conditions to Avoid Incompatible products. Excess heat. Exposure to air over prolonged period.
Incompatible Materials Oxidizing agents, Reducing agents, Bases, Halogens
Hazardous Decomposition Products Sulfur oxides
Hazardous Polymerization Hazardous polymerization does not occur.
Hazardous Reactions None under normal processing.
11. Toxicological information
Acute Toxicity
Product Information No acute toxicity information is available for this product
Component Information
Toxicologically Synergistic No information available
Products
Delayed and immediate effects as well as chronic effects from short and long-term exposure
Irritation Causes burns by all exposure routes
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Sensitization No information available
Carcinogenicity The table below indicates whether each agency has listed any ingredient as a carcinogen.
Component CAS-No IARC NTP ACGIH OSHA Mexico
Sulfurous acid 7782-99-2 Not listed Not listed Not listed Not listed Not listed
Mutagenic Effects No information available
Reproductive Effects No information available.
Developmental Effects No information available.
Teratogenicity No information available.
STOT - single exposure Respiratory system
STOT - repeated exposure None known
Aspiration hazard No information available
Symptoms / effects,both acute and Product is a corrosive material. Use of gastric lavage or emesis is contraindicated.
delayed Possible perforation of stomach or esophagus should be investigated: Ingestion causes
severe swelling, severe damage to the delicate tissue and danger of perforation
Endocrine Disruptor Information No information available
Other Adverse Effects The toxicological properties have not been fully investigated.
12. Ecological information
Ecotoxicity
.
Persistence and Degradability No information available
Bioaccumulation/ Accumulation No information available.
Mobility No information available.
13. Disposal considerations
Waste Disposal Methods Chemical waste generators must determine whether a discarded chemical is classified as a
hazardous waste. Chemical waste generators must also consult local, regional, and
national hazardous waste regulations to ensure complete and accurate classification.
14. Transport information
DOT
UN-No UN1833
Proper Shipping Name SULFUROUS ACID
Hazard Class 8
Packing Group II
TDG
UN-No UN1833
Proper Shipping Name SULFUROUS ACID
Hazard Class 8
Packing Group II
IATA
UN-No UN1833
Proper Shipping Name SULPHUROUS ACID
Hazard Class 8
Packing Group II
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IMDG/IMO
UN-No UN1833
Proper Shipping Name SULPHUROUS ACID
Hazard Class 8
Packing Group II
15. Regulatory information
International Inventories
Component TSCA DSL NDSL EINECS ELINCS NLP PICCS ENCS AICS IECSC KECL
Sulfurous acid X X - 231-973-1 - X X X X X
Legend:
X - Listed
E - Indicates a substance that is the subject of a Section 5(e) Consent order under TSCA.
F - Indicates a substance that is the subject of a Section 5(f) Rule under TSCA.
N - Indicates a polymeric substance containing no free-radical initiator in its inventory name but is considered to cover the designated
polymer made with any free-radical initiator regardless of the amount used.
P - Indicates a commenced PMN substance
R - Indicates a substance that is the subject of a Section 6 risk management rule under TSCA.
S - Indicates a substance that is identified in a proposed or final Significant New Use Rule
T - Indicates a substance that is the subject of a Section 4 test rule under TSCA.
XU - Indicates a substance exempt from reporting under the Inventory Update Rule, i.e. Partial Updating of the TSCA Inventory Data Base
Production and Site Reports (40 CFR 710(B).
Y1 - Indicates an exempt polymer that has a number-average molecular weight of 1,000 or greater.
Y2 - Indicates an exempt polymer that is a polyester and is made only from reactants included in a specified list of low concern reactants
that comprises one of the eligibility criteria for the exemption rule.
U.S. Federal Regulations
TSCA 12(b) Not applicable
SARA 313 Not applicable
SARA 311/312 Hazard Categories See section 2 for more information
CWA (Clean Water Act) Not applicable
Clean Air Act Not applicable
OSHA Occupational Safety and Health Administration
Not applicable
CERCLA Not applicable
California Proposition 65 This product does not contain any Proposition 65 chemicals
U.S. State Right-to-Know
Regulations
Component Massachusetts New Jersey Pennsylvania Illinois Rhode Island
Sulfurous acid - X - - -
U.S. Department of Transportation
Reportable Quantity (RQ): N
DOT Marine Pollutant N
DOT Severe Marine Pollutant N
U.S. Department of Homeland Security
This product does not contain any DHS chemicals.
Other International Regulations
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Mexico - Grade No information available
16. Other information
Prepared By Regulatory Affairs
Thermo Fisher Scientific
Email: EMSDS.RA@thermofisher.com
Creation Date 03-Jun-2014
Revision Date 18-Jan-2018
Print Date 18-Jan-2018
Revision Summary This document has been updated to comply with the US OSHA HazCom 2012 Standard
replacing the current legislation under 29 CFR 1910.1200 to align with the Globally
Harmonized System of Classification and Labeling of Chemicals (GHS).
Disclaimer
The information provided in this Safety Data Sheet is correct to the best of our knowledge, information and belief at the
date of its publication. The information given is designed only as a guidance for safe handling, use, processing, storage,
transportation, disposal and release and is not to be considered a warranty or quality specification. The information
relates only to the specific material designated and may not be valid for such material used in combination with any other
materials or in any process, unless specified in the text
End of SDS
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