MSDS Number: S5022 * * * * * Effective Date: 11/08/06 * * * * *
Supercedes: 03/26/04

SODIUM SULFATE

1. Product Identification

Synonyms: Sodium sulfate decahydrate; disodium sulfate
decahydrate; glauber's salt; sulfuric acid, sodium salt, decahydrate; sodium
sulfate, 10-hydrate
CAS No.: 7757-82-6 (Anhydrous) 7727-73-3
(Decahydrate)
Molecular Weight: 322.20
Chemical Formula:
Na2SO4.10H2O
Product Codes:
J.T. Baker: 3890
Mallinckrodt:
8012, 8027

2. Composition/Information on Ingredients

Ingredient CAS No Percent Hazardous
--------------------------------------- ------------ ------------ ---------

Sodium Sulfate 7757-82-6 98 - 100% Yes

3. Hazards Identification

Emergency Overview
--------------------------
As
part of good industrial and personal hygiene and safety procedure, avoid all
unnecessary exposure to the chemical substance and ensure prompt removal from
skin, eyes and clothing.

SAF-T-DATA(tm) Ratings
(Provided here for your convenience)

-----------------------------------------------------------------------------------------------------------

Health Rating: 1 - Slight
Flammability Rating: 0 - None
Reactivity
Rating: 1 - Slight
Contact Rating: 1 - Slight
Lab Protective Equip:
GOGGLES; LAB COAT
Storage Color Code: Green (General Storage)

Potential Health Effects
----------------------------------

Inhalation:
Not expected to be a health hazard.

Ingestion:
Mildly toxic by ingestion. Systemic toxicity is
unlikely unless massive amounts have been swallowed. Drinking water with >
500 mg/L may result in gastrointestinal irritation.
Skin Contact:

No adverse effects expected.
Eye Contact:
No adverse
effects expected but dust may cause mechanical irritation.
Chronic
Exposure:
No information found.
Aggravation of Pre-existing
Conditions:
No information found.

4. First Aid Measures

Inhalation:
Not expected to require first aid measures.

Ingestion:
Give several glasses of water to drink to dilute. If
large amounts were swallowed, get medical advice.
Skin Contact:

Wash exposed area with soap and water. Get medical advice if irritation
develops.
Eye Contact:
Wash thoroughly with running water. Get
medical advice if irritation develops.

5. Fire Fighting Measures

Fire:
Not considered to be a fire hazard.

Explosion:
Not considered an explosion hazard, but violent
explosions occur when potassium sulfate and sodium sulfate are melted with
aluminum.
Fire Extinguishing Media:
Use any means suitable for
extinguishing surrounding fire.
Special Information:
Use
protective clothing and breathing equipment appropriate for the surrounding
fire.

6. Accidental Release Measures

Ventilate area of leak or spill. Wear appropriate personal
protective equipment as specified in Section 8. Spills: Sweep up and
containerize for reclamation or disposal. Vacuuming or wet sweeping may be
used to avoid dust dispersal.

7. Handling and Storage

Keep in a tightly closed container, stored in a cool, dry,
ventilated area. Protect against physical damage. Isolate from incompatible
substances. Containers of this material may be hazardous when empty since they
retain product residues (dust, solids); observe all warnings and precautions
listed for the product.

8. Exposure Controls/Personal Protection

Airborne Exposure Limits:
None established.

Ventilation System:
In general, dilution ventilation is a
satisfactory health hazard control for this substance. However, if conditions
of use create discomfort to the worker, a local exhaust system should be
considered.
Personal Respirators (NIOSH Approved):
For
conditions of use where exposure to dust or mist is apparent and engineering
controls are not feasible, a particulate respirator (NIOSH type N95 or better
filters) may be worn. If oil particles (e.g. lubricants, cutting fluids,
glycerine, etc.) are present, use a NIOSH type R or P filter. For emergencies
or instances where the exposure levels are not known, use a full-face
positive-pressure, air-supplied respirator. WARNING: Air-purifying respirators
do not protect workers in oxygen-deficient atmospheres.
Skin
Protection:
Wear protective gloves and clean body-covering clothing.

Eye Protection:
Use chemical safety goggles. Maintain eye wash
fountain and quick-drench facilities in work area.

9. Physical and Chemical Properties

Appearance:
White efflorescent crystals or granules.

Odor:
Odorless.
Solubility:
Soluble in 1.5 parts
of water @ 25C (77F).
Specific Gravity:
1.46
pH:

Aqueous solution is neutral.
% Volatiles by volume @ 21C (70F):

0
Boiling Point:
No information found.
Melting
Point:
32C (90F) Loses water at 100C (212F). Anhydrous melts ca. 844C
(1551F)
Vapor Density (Air=1):
No information found.

Vapor Pressure (mm Hg):
No information found.

Evaporation Rate (BuAc=1):
No information found.

10. Stability and Reactivity

Stability:
Stable under ordinary conditions of use and
storage. Effloresces in dry air.
Hazardous Decomposition Products:

Oxides of sulfur and sodium may form when heated to decomposition.

Hazardous Polymerization:
Will not occur.

Incompatibilities:
In combination with sodium sulfate, aluminum
and magnesium will explode @ 800C (1472F); strong mineral acids and bases.

Conditions to Avoid:
Air, incompatibles.

11. Toxicological Information

Investigated as a tumorigen, mutagen, reproductive effector.
No LD50/LC50 information found relating to normal routes of occupational
exposure.

--------\Cancer Lists\------------------------------------------------------
---NTP Carcinogen---
Ingredient Known Anticipated IARC Category
------------------------------------ ----- ----------- -------------
Sodium Sulfate (7757-82-6) No No None

12. Ecological Information

Environmental Fate:
When released into the soil, this
material is expected to leach into groundwater. This material is not expected
to significantly bioaccumulate.
Environmental Toxicity:
This
material is not expected to be toxic to aquatic life. The LC50/96-hour values
for fish are over 100 mg/l. The EC50/48-hour values for daphnia are over 100
mg/l.

13. Disposal Considerations

Whatever cannot be saved for recovery or recycling should be
managed in an appropriate and approved waste disposal facility. Processing,
use or contamination of this product may change the waste management options.
State and local disposal regulations may differ from federal disposal
regulations. Dispose of container and unused contents in accordance with
federal, state and local requirements.

14. Transport Information

Not regulated.

15. Regulatory Information

--------\Chemical Inventory Status - Part 1\---------------------------------
Ingredient TSCA EC Japan Australia
----------------------------------------------- ---- --- ----- ---------
Sodium Sulfate (7757-82-6) Yes Yes Yes Yes

--------\Chemical Inventory Status - Part 2\---------------------------------
--Canada--
Ingredient Korea DSL NDSL Phil.
----------------------------------------------- ----- --- ---- -----
Sodium Sulfate (7757-82-6) Yes Yes No Yes

--------\Federal, State & International Regulations - Part 1\----------------
-SARA 302- ------SARA 313------
Ingredient RQ TPQ List Chemical Catg.
----------------------------------------- --- ----- ---- --------------
Sodium Sulfate (7757-82-6) No No No No

--------\Federal, State & International Regulations - Part 2\----------------
-RCRA- -TSCA-
Ingredient CERCLA 261.33 8(d)
----------------------------------------- ------ ------ ------
Sodium Sulfate (7757-82-6) No No No

Chemical Weapons Convention: No TSCA 12(b): No CDTA: No
SARA 311/312: Acute: No Chronic: No Fire: No Pressure: No
Reactivity: No (Pure / Solid)

Australian Hazchem Code: None allocated.

Poison Schedule: None allocated.
WHMIS:
This MSDS
has been prepared according to the hazard criteria of the Controlled Products
Regulations (CPR) and the MSDS contains all of the information required by the
CPR.

16. Other Information

NFPA Ratings: Health: 1 Flammability: 0
Reactivity: 0
Label Hazard Warning:
As part of good
industrial and personal hygiene and safety procedure, avoid all unnecessary
exposure to the chemical substance and ensure prompt removal from skin, eyes
and clothing.
Label Precautions:
None.
Label First
Aid:
Not applicable.
Product Use:
Laboratory Reagent.

Revision Information:
No Information Found.

Disclaimer:

************************************************************************************************

Mallinckrodt Baker, Inc. provides the information contained herein in
good faith but makes no representation as to its comprehensiveness or
accuracy. This document is intended only as a guide to the appropriate
precautionary handling of the material by a properly trained person using this
product. Individuals receiving the information must exercise their independent
judgment in determining its appropriateness for a particular purpose.
MALLINCKRODT BAKER, INC. MAKES NO REPRESENTATIONS OR WARRANTIES, EITHER
EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE WITH RESPECT TO THE
INFORMATION SET FORTH HEREIN OR THE PRODUCT TO WHICH THE INFORMATION REFERS.
ACCORDINGLY, MALLINCKRODT BAKER, INC. WILL NOT BE RESPONSIBLE FOR DAMAGES
RESULTING FROM USE OF OR RELIANCE UPON THIS INFORMATION.

************************************************************************************************

Prepared by: Environmental Health & Safety
Phone Number:
(314) 654-1600 (U.S.A.)