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MSDS Number: W0600 --- Effective Date: 11/17/99

1. Product Identification

Synonyms: Dihydrogen Oxide
CAS No.: 7732-18-5
Molecular Weight: 18
Chemical Formula: H2O
Product Codes:
J.T. Baker: 4218, 4219, 6906
Mallinckrodt: 6795, H453, V564

2. Composition/Information on Ingredients

  Ingredient                                CAS No         Percent   Hazardous                                       
  ---------------------------------------   ------------   -------   ---------        
  Water                                     7732-18-5        100%       No                                                                

3. Hazards Identification

Emergency Overview
Not applicable.

J.T. Baker SAF-T-DATA(tm) Ratings (Provided here for your convenience)
Health Rating: 0 - None
Flammability Rating: 0 - None
Reactivity Rating: 1 - Slight
Contact Rating: 0 - None
Lab Protective Equip: GOGGLES; LAB COAT
Storage Color Code: Orange (General Storage)

Potential Health Effects

Water is non-hazardous.

Not applicable.
Not applicable.
Skin Contact:
Not applicable.
Eye Contact:
Not applicable.
Chronic Exposure:
Not applicable.
Aggravation of Pre-existing Conditions:
Not applicable.

4. First Aid Measures

Not applicable.
Not applicable.
Skin Contact:
Not applicable.
Eye Contact:
Not applicable.

5. Fire Fighting Measures

Not applicable.
Not applicable.
Fire Extinguishing Media:
Use extinguishing media appropriate for surrounding fire.
Special Information:
In the event of a fire, wear full protective clothing and NIOSH-approved self-contained breathing apparatus with full facepiece operated in the pressure demand or other positive pressure mode.

6. Accidental Release Measures

Non-hazardous material. Clean up of spills requires no special equipment or procedures.

7. Handling and Storage

Keep container tightly closed. Suitable for any general chemical storage area. Protect from freezing. Water is considered a non-regulated product, but may react vigorously with some specific materials. Avoid contact with all materials until investigation shows substance is compatible.

8. Exposure Controls/Personal Protection

Airborne Exposure Limits: Not applicable.
Ventilation System: Not applicable.
Personal Respirators (NIOSH Approved): Not applicable.
Skin Protection: None required.
Eye Protection: None required.

9. Physical and Chemical Properties

Appearance: Clear, colorless liquid.
Odor: Odorless.
Solubility: Complete (100%)
Specific Gravity: 1.00
pH: 7.0
% Volatiles by volume @ 21C (70F): 100
Boiling Point: 100C (212F)
Melting Point: 0C (32F)
Vapor Density (Air=1): Not applicable.
Vapor Pressure (mm Hg): 17.5 @ 20C (68F)
Evaporation Rate (BuAc=1): No information found.

10. Stability and Reactivity

Stable under ordinary conditions of use and storage.
Hazardous Decomposition Products:
Not applicable.
Hazardous Polymerization:
Will not occur.
Strong reducing agents, acid chlorides, phosphorus trichloride, phosphorus pentachloride, phosphorus oxychloride.
Conditions to Avoid:
No information found.

11. Toxicological Information

  --------\Cancer Lists\------------------------------------------------------
                                         ---NTP Carcinogen---
  Ingredient                             Known    Anticipated    IARC Category
  ------------------------------------   -----    -----------    -------------
  Water (7732-18-5)                       No          No            None

12. Ecological Information

Environmental Fate: Not applicable.
Environmental Toxicity: Not applicable.

13. Disposal Considerations

Whatever cannot be saved for recovery or recycling should be flushed to sewer. If material becomes contaminated during use, dispose of accordingly. 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
  -----------------------------------------------  ----  ---  -----  ---------
  Water (7732-18-5)                                 Yes  Yes   Yes      Yes                                      
  --------\Chemical Inventory Status - Part 2\---------------------------------
  Ingredient                                       Korea  DSL   NDSL  Phil.
  -----------------------------------------------  -----  ---   ----  -----
  Water (7732-18-5)                                 Yes   Yes   No     Yes                             
  --------\Federal, State & International Regulations - Part 1\----------------
                                             -SARA 302-    ------SARA 313------
  Ingredient                                 RQ    TPQ     List  Chemical Catg.
  -----------------------------------------  ---   -----   ----  --------------
  Water (7732-18-5)                          No    No      No         No
  --------\Federal, State & International Regulations - Part 2\----------------
                                                        -RCRA-    -TSCA-
  Ingredient                                 CERCLA     261.33     8(d) 
  -----------------------------------------  ------     ------    ------
  Water (7732-18-5)                          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 / Liquid)

Australian Hazchem Code: No information found.
Poison Schedule: No information found.
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: 0 Flammability: 0 Reactivity: 0
Label Hazard Warning:
Not applicable.
Label Precautions:
Keep in tightly closed container.
Label First Aid:
Not applicable.
Product Use:
Laboratory Reagent.
Revision Information:
No changes.
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: Strategic Services Division
Phone Number: (314) 539-1600 (U.S.A.)