SIGMA-ALDRICH
Material Safety Data Sheet
Date Printed: 11/MAY/2005
Date Updated: 13/MAR/2004
Version 1.3
According to 91/155/EEC
Classified as Hazardous according to the criteria of EU Annex 1 and
NOHSC.
1 - Product and Company Information
Product Name POTASSIUM METABISULFITE
Product Number P2522
Company Sigma-Aldrich Pty, Ltd
Unit 2, 14 Anella Avenue
Castle Hill NSW 1765
Australia
Technical Phone # +61 2 9841 0555
Fax +61 2 9841 0500
Emergency Phone # +61 2 9841 0566
2 - Composition/Information on Ingredients
Product Name CAS # EC no Annex I
Index Number
POTASSIUM METABISULFITE 16731-55-8 240-795-3 None
Formula K2S2O5
Molecular Weight 222.33 AMU
3 - Hazards Identification
SPECIAL INDICATION OF HAZARDS TO HUMANS AND THE ENVIRONMENT
Contact with acids liberates toxic gas. Irritating to eyes,
respiratory system and skin.
4 - First Aid Measures
AFTER INHALATION
If inhaled, remove to fresh air. If not breathing give
artificial respiration. If breathing is difficult, give oxygen.
AFTER SKIN CONTACT
In case of contact, immediately wash skin with soap and copious
amounts of water.
AFTER EYE CONTACT
In case of contact, immediately flush eyes with copious amounts
of water for at least 15 minutes.
AFTER INGESTION
If swallowed, wash out mouth with water provided person is
conscious. Call a physician.
5 - Fire Fighting Measures
EXTINGUISHING MEDIA
Suitable: Dry chemical powder.
SPECIAL RISKS
Specific Hazard(s): Emits toxic fumes under fire conditions.
SPECIAL PROTECTIVE EQUIPMENT FOR FIREFIGHTERS
Wear self-contained breathing apparatus and protective clothing
to prevent contact with skin and eyes.
6 - Accidental Release Measures
PERSONAL PRECAUTION PROCEDURES TO BE FOLLOWED IN CASE OF LEAK OR SPILL
Evacuate area.
PROCEDURE(S) OF PERSONAL PRECAUTION(S)
Wear self-contained breathing apparatus, rubber boots, and heavy
rubber gloves.
METHODS FOR CLEANING UP
Sweep up, place in a bag and hold for waste disposal. Avoid
raising dust. Ventilate area and wash spill site after material
pickup is complete.
7 - Handling and Storage
HANDLING
Directions for Safe Handling: Do not breathe dust. Do not get in
eyes, on skin, on clothing. Avoid prolonged or repeated exposure.
STORAGE
Conditions of Storage: Keep tightly closed. Store in a cool dry
place.
Incompatible Materials: Avoid contact with acid.
8 - Exposure Controls / Personal Protection
ENGINEERING CONTROLS
Safety shower and eye bath. Use only in a chemical fume hood.
GENERAL HYGIENE MEASURES
Wash thoroughly after handling. Wash contaminated clothing before
reuse.
PERSONAL PROTECTIVE EQUIPMENT
Special Protective Measures: Wear appropriate government approved
respirator, chemical-resistant gloves, safety goggles, other
protective clothing.
9 - Physical and Chemical Properties
Appearance Color: White
Form: Powder
Property Value At Temperature or Pressure
pH 3 - 4.5
BP/BP Range N/A
MP/MP Range N/A
Flash Point N/A
Flammability N/A
Autoignition Temp N/A
Oxidizing Properties N/A
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Explosive Properties N/A
Explosion Limits N/A
Vapor Pressure N/A
SG/Density N/A
Partition Coefficient N/A
Viscosity N/A
Vapor Density N/A
Saturated Vapor Conc. N/A
Evaporation Rate N/A
Bulk Density N/A
Decomposition Temp. N/A
Solvent Content N/A
Water Content N/A
Surface Tension N/A
Conductivity N/A
Miscellaneous Data N/A
Solubility Solubility in Water:0.1 M in H2O, 20掳C
complete, colorless
10 - Stability and Reactivity
STABILITY
Stable: Stable.
Conditions of Instability: Moisture sensitive.
Conditions to Avoid: Air sensitive.
Materials to Avoid: Strong oxidizing agents.
HAZARDOUS DECOMPOSITION PRODUCTS
Hazardous Decomposition Products: Sulfur oxides.
HAZARDOUS POLYMERIZATION
Hazardous Polymerization: Will not occur
11 - Toxicological Information
RTECS NUMBER: TT4920000
SENSITIZATION
Sensitization: May cause allergic respiratory and skin reactions
SIGNS AND SYMPTOMS OF EXPOSURE
Symptoms of exposure may include burning sensation, coughing,
wheezing, laryngitis, shortness of breath, headache, nausea, and
vomiting. Exposure can cause: Coughing, chest pains, difficulty
in breathing. Stomach pains, vomiting, diarrhea.
ROUTE OF EXPOSURE
Multiple Routes: Harmful if swallowed, inhaled, or absorbed
through skin. High concentrations are extremely destructive to
tissues of the mucous membranes and upper respiratory tract,
eyes, and skin.
CONDITIONS AGGRAVATED BY EXPOSURE
Warning: certain individuals with preexisting respiratory
conditions such as asthma may experience hypersensitivity to
sulfites and sulfur dioxide. The symptoms include
bronchoconstriction, bronchospasm, gastrointestinal
disturbances, flushing, hypotension, tingling sensation,
urticaria/angioedema, and shock
IARC CARCINOGEN LIST
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Rating: Group 3
CHRONIC EXPOSURE - MUTAGEN
Rat
400 MG/KG
Oral
Unscheduled DNA synthesis
CHRONIC EXPOSURE - REPRODUCTIVE HAZARD
Species: Rat
Dose: 35 GM/KG
Route of Application: Oral
Exposure Time: (49D PRE/1-21D PREG)
Result: Effects on Newborn: Growth statistics (e.g., reduced
weight gain).
12 - Ecological Information
No data available.
13 - Disposal Considerations
SUBSTANCE DISPOSAL
For small quantities: cautiously add to a large stirred excess of
water. Adjust the pH to neutral, separate any insoluble solids or
liquids and package them for hazardous-waste disposal. Flush the
aqueous solution down the drain with plenty of water. The
hydrolysis and neutralization reactions may generate heat and
fumes which can be controlled by the rate of addition. Observe all
federal, state, and local environmental regulations.
14 - Transport Information
RID/ADR
Non-hazardous for road transport.
IMDG
Non-hazardous for sea transport.
IATA
Non-hazardous for air transport.
15 - Regulatory Information
CLASSIFICATION AND LABELING ACCORDING TO EU DIRECTIVES
INDICATION OF DANGER: Xi
Irritant.
R-PHRASES: 31 36/37/38
Contact with acids liberates toxic gas. Irritating to eyes,
respiratory system and skin.
S-PHRASES: 26 36
In case of contact with eyes, rinse immediately with plenty of
water and seek medical advice. Wear suitable protective
clothing.
COUNTRY SPECIFIC INFORMATION
Germany
WGK: 1
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SWITZERLAND
SWISS POISON CLASS: 3
16 - Other Information
WARRANTY
The above information is believed to be correct but does not
purport to be all inclusive and shall be used only as a guide. The
information in this document is based on the present state of our
knowledge and is applicable to the product with regard to
appropriate safety precautions. It does not represent any
guarantee of the properties of the product. Sigma-Aldrich Inc.,
shall not be held liable for any damage resulting from handling or
from contact with the above product. See reverse side of invoice
or packing slip for additional terms and conditions of sale.
Copyright 2005 Sigma-Aldrich Co. License granted to make unlimited
paper copies for internal use only.
DISCLAIMER
For R&D use only. Not for drug, household or other uses.
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