SIGMA-ALDRICH



                         Material Safety Data Sheet



                                                 Date Printed: 04/APR/2005

                                                 Date Updated: 17/MAR/2004

                                                               Version 1.1

                                                   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                     MAGNESIUM BISULFITE, APPROX. 30 WT. %

                                 SOLUTION IN WATER

Product Number                   398233



Company                          Sigma-Aldrich Pty, Ltd

                                 Unit 2, 14 Anella Avenue

                                 Castle Hill NSW 1765

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

MAGNESIUM BISULFITE, APPROX. 30        13774-25-9   237-403-8   None

WT. %SOLUTION IN WATER



Formula             Mg(HSO3)2

Molecular Weight    186.45 AMU



3 - Hazards Identification



SPECIAL INDICATION OF HAZARDS TO HUMANS AND THE ENVIRONMENT

   Causes burns.





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 EYE CONTACT

   Assure adequate flushing of the eyes by separating the eyelids

   with fingers.



AFTER INGESTION

   If swallowed, wash out mouth with water provided person is

   conscious. Call a physician.



5 - Fire Fighting Measures



EXTINGUISHING MEDIA

   Suitable: Carbon dioxide, dry chemical powder, or appropriate

   foam.



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

   Absorb on sand or vermiculite and place in closed containers for

   disposal. Ventilate area and wash spill site after material

   pickup is complete.



7 - Handling and Storage



HANDLING

   Directions for Safe Handling: Do not breathe vapor. 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.



8 - Exposure Controls / Personal Protection



ENGINEERING CONTROLS

   Safety shower and eye bath. Use only in a chemical fume hood.



GENERAL HYGIENE MEASURES

   Wash contaminated clothing before reuse. Discard contaminated

   shoes. Wash thoroughly after handling.



PERSONAL PROTECTIVE EQUIPMENT

   Special Protective Measures: Wear appropriate government approved

   respirator, chemical-resistant gloves, safety goggles, other

   protective clothing. Faceshield (8-inch minimum).



9 - Physical and Chemical Properties



Appearance              Physical State: Liquid



Property                Value                 At Temperature or Pressure



pH                      N/A

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

Explosive Properties    N/A

Explosion Limits        N/A

Vapor Pressure          N/A

SG/Density              1.22 g/cm3





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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              N/A



10 - Stability and Reactivity



STABILITY

   Materials to Avoid: Strong oxidizing agents, Acids.



HAZARDOUS DECOMPOSITION PRODUCTS

   Hazardous Decomposition Products: Sulfur oxides.



11 - Toxicological Information



SIGNS AND SYMPTOMS OF EXPOSURE

   Material is extremely destructive to tissue of the mucous

   membranes and upper respiratory tract, eyes, and skin.

   Inhalation may result in spasm, inflammation and edema of the

   larynxand bronchi, chemical pneumonitis, and pulmonary edema.

   Symptoms of exposure may include burning sensation, coughing,

   wheezing, laryngitis, shortness of breath, headache, nausea, and

   vomiting. Exposure can cause: Nausea, headache, and vomiting. To

   the best of our knowledge, the chemical, physical, and

   toxicological properties have not been thoroughly investigated.



ROUTE OF EXPOSURE

   Multiple Routes: Harmful if swallowed, inhaled, or absorbed

   through skin.



12 - Ecological Information



No data available.



13 - Disposal Considerations



SUBSTANCE DISPOSAL

   Dissolve or mix the material with a combustible solvent and burn

   in a chemical incinerator equipped with an afterburner and

   scrubber. Observe all federal, state, and local environmental

   regulations.



14 - Transport Information



RID/ADR

   UN#: 2693

   Class: 8

   PG: III

   Proper Shipping Name: Bisulphites, aqueous solution,

   n.o.s.



IMDG

   UN#: 2693





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   Class: 8

   PG: III

   Proper Shipping Name: BISULPHITES, AQUEOUS, SOLUTION,

   N.O.S.

   Marine Pollutant: No

   Severe Marine Pollutant: No

   Technical Name: Required



IATA

   UN#: 2693

   Class: 8

   PG: III

   Proper Shipping Name: Bisulphites, aqueous solution,

   n.o.s.

   Inhalation Packing Group I: No

   Technical Name: Required



15 - Regulatory Information



CLASSIFICATION AND LABELING ACCORDING TO EU DIRECTIVES

   INDICATION OF DANGER: C

     Corrosive.

   R-PHRASES: 34

     Causes burns.

   S-PHRASES: 23 26 27 36/37/39 45

     Do not breathe vapor. In case of contact with eyes, rinse

     immediately with plenty of water and seek medical advice. Take

     off immediately all contaminated clothing. Wear suitable

     protective clothing, gloves, and eye/face protection. In case

     of accident or if you feel unwell, seek medical advice

     immediately (show the label where possible).



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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