Synonyms: Dihydrogen Oxide, Hydrogen Hydroxide, Hydronium Hydroxide, Oxydihydride, Monoxydihydride, Oxygen Dihydride, Hydric acid.

CAS No.: 7732-18-5

Molecular Weight: 18

Chemical Formula: H2O

2. Composition/Information on Ingredients

Ingredient CAS No Percent Hazardous

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

DHMO 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)

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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)

Inhalation: Death possible Ingestion: Excessive ingestion can cause distress

Skin Contact: Can be absorbed by skin. Eye Contact: May remove eye moisture

Chronic Exposure: Not applicable.

Aggravation of Pre-existing Conditions: Not applicable.

4. First Aid Measures

Inhalation: CPR Skin Contact: Dry area with towel, etc.

Ingestion: Seek Medical attention Eye Contact: Seek medical attention

5. Fire Fighting Measures

Fire: Not applicable Explosion: 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. DHMO 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

Skin Protection: Lab Coat, Gloves. Eye Protection: Goggles

Personal Respirators (NIOSH Approved): Not applicable

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

Stability: Stable under ordinary conditions of use and storage.

Hazardous Decomposition Products: Not applicable.

Hazardous Polymerization: Will not occur.

Incompatibilities: Strong reducing agents, acid chlorides, phosphorus trichloride,

phosphorus pentachloride, phosphorus oxychloride, sodium.

Conditions to Avoid: No information found.

11. Toxicological Information

--------\Cancer Lists\------------------------------------------------------

---NTP Carcinogen---

Ingredient Known Anticipated IARC Category

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

DHMO (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

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

DHMO (7732-18-5) Yes Yes Yes Yes

--------\Chemical Inventory Status - Part 2\---------------------------------

--Canada--

Ingredient Korea DSL NDSL Phil.

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

DHMO (7732-18-5) Yes Yes No Yes

--------\Federal, State & International Regulations - Part 1\----------------

-SARA 302- ------SARA 313------

Ingredient RQ TPQ List Chemical Catg.

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

DHMO (7732-18-5) No No No No

--------\Federal, State & International Regulations - Part 2\----------------

-RCRA- -TSCA-

Ingredient CERCLA 261.33 8(d)

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

DHMO (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.

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: 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.