The downloadable PDF is a print of this page and carries all 16 OSHA HCS sections.
Last reviewed 2026-06-17 by Andre Taki, Chief Commercial Officer, DOT Hazmat–certified (49 CFR 172.704).
CAS number
7732-18-5
Structure
Structure · PubChem
Grade
Reagent
Section 1
Identification
Product Identifier
Deionized Water ACS Reagent Grade
Grade
Reagent
CAS Number
7732-18-5
Chemical Formula
H2O
Molecular Weight
18.015 g/mol
Manufacturer
Alliance Chemical 204 South Edmond Street, Taylor, TX 76574
Emergency Phone
Chemtel 1-800-255-3924 (24/7)
Recommended Use
Industrial / laboratory chemical. See Section 7.
Restrictions on Use
No restrictions identified beyond the conditions of safe use in Sections 7 and 8.
Section 2
Hazard Identification
Signal Word
Not applicable
Hazard Statements
Not classified as hazardous under GHS based on available data.
Precautionary Statements
No specific GHS precautionary statements required.
Section 3
Composition / Information on Ingredients
Composition and information on ingredients
Component
CAS No.
Formula
Concentration
Deionized Water
7732-18-5
H2O
99.5-100% (w/w)
Concentrations are nominal; lot-specific values appear on the Certificate of Analysis. Components not contributing to classification are omitted.
Section 4
First-Aid Measures
Eyes
Rinse with water. Get medical attention if irritation develops or persists.
Skin
Wash with soap and water. Get medical attention if irritation develops.
Inhalation
Move to fresh air if discomfort occurs.
Ingestion
Rinse mouth with water. Get medical attention if you feel unwell.
Most Important Symptoms and Effects
No specific symptoms are expected from the hazards identified in Section 2.
Immediate Medical Attention and Special Treatment
Treat symptomatically. Get medical attention if symptoms develop or persist.
Section 5
Fire-Fighting Measures
Suitable Extinguishing Media
Use water spray, alcohol-resistant foam, dry chemical, or CO2. Use measures appropriate to local circumstances.
Unsuitable Extinguishing Media
Do not use a solid water stream as it may scatter and spread fire.
Specific Hazards Arising from the Chemical
Containers may rupture when heated.
Protective Equipment
Wear self-contained breathing apparatus and full protective clothing.
Hazardous Combustion Products
None known.
Section 6
Accidental Release Measures
Personal Precautions
Wear safety glasses and gloves for cleanup. Spills can make floors slippery.
Environmental Precautions
Avoid releasing large quantities to drains or waterways.
Containment & Cleanup
Absorb or wipe up, then rinse the area with water. Dispose of according to local regulations.
Section 7
Handling and Storage
Safe Handling
Use with adequate ventilation. Avoid contact with skin, eyes, and clothing. Wash thoroughly after handling. Keep container closed when not in use.
Safe Storage
Store in a cool, dry, well-ventilated area. Keep away from incompatible materials (see Section 10). Keep containers tightly closed.
Specific Storage Precautions
Store in the original container in a cool, dry, well-ventilated place; keep container closed when not in use.
Section 8
Exposure Controls / Personal Protection
Occupational Exposure Limits
No established occupational exposure limits.
Engineering Controls
General ventilation is normally adequate.
Eye/Face Protection
Safety glasses are recommended.
Skin Protection
Gloves are recommended for prolonged or repeated contact.
Respiratory Protection
Not normally required.
Section 9
Physical & Chemical Properties
Appearance
Clear, colorless liquid
Odor
Odorless
Odor Threshold
No data available
pH
5.0 – 7.5
Melting Point / Freezing Point
0 °C (32 °F)
Boiling Point
100 °C (212 °F) at 760 mmHg
Flash Point
Not applicable
Evaporation Rate
No data available
Flammability (solid, gas)
No data available
Upper/Lower Flammability or Explosive Limits
No data available
Vapor Pressure
17.5 mmHg at 20 °C
Vapor Density
0.62 (air = 1)
Relative Density
0.998
Solubility
Not applicable
Partition Coefficient (n-octanol/water)
No data available
Auto-ignition Temperature
No data available
Decomposition Temperature
No data available
Viscosity
1.002 mPa·s at 20 °C
Particle Characteristics
Not applicable
Form
Liquid
Color
Colorless
Density
0.998 g/cm³ at 20 °C
Refractive Index
1.333
Values shown reflect product-specific canonical data. Lot-specific ranges may vary; see the Certificate of Analysis for the shipped lot.
Section 10
Stability and Reactivity
Reactivity
Not reactive under normal conditions of use and storage.
Chemical Stability
Stable under recommended storage conditions.
Possibility of Hazardous Reactions
None under normal processing conditions.
Conditions to Avoid
Direct sunlight; extremely high or low temperatures.
Incompatible Materials
Strong acids; strong bases.
Hazardous Decomposition Products
None known.
Section 11
Toxicological Information
See Section 2 for GHS hazard classification.
Likely Routes of Exposure
Inhalation, skin contact, eye contact, ingestion.
Symptoms
No specific symptoms are expected from the hazards identified in Section 2.
Delayed and Chronic Effects
No delayed or chronic effects identified beyond the classification in Section 2.
Numerical Measures of Toxicity
No data available
Carcinogen Classification
Carcinogen classification
Agency
Status
IARC
Not listed as carcinogen.
NTP
Not listed as carcinogen.
OSHA
Not listed as carcinogen.
Section 12
Ecological Information
Ecotoxicity
Data not available. Avoid release to the environment.
Persistence & Degradability
Not Available
Bioaccumulative Potential
Not Available
Mobility in Soil
Not Available
Section 13
Disposal Considerations
Dispose of contents/container in accordance with applicable federal, state, and local regulations. Do not dispose of into drains or waterways.
Section 14
Transport Information
Not regulated for transport under US DOT 49 CFR Subchapter C, IMDG, or IATA DGR.
Section 15
Regulatory Information
Regulatory inventory listings
Inventory / List
Status
California Proposition 65
Not listed
US EPA TSCA Active Inventory
Listed
EPCRA SARA 313 (TRI)
Not listed
SARA 311/312 hazard categories correspond to the GHS classification in Section 2. Data retrieved as of: California Proposition 65 2026-10-02; US EPA TSCA Active Inventory 2026-10-02; EPCRA SARA 313 (TRI) 2026-10-02.
Section 16
Other Information
Revision Date
Format
16-section format per OSHA HCS 2024 (29 CFR 1910.1200, Appendix D), aligned with GHS Rev. 7.
Disclaimer: The information provided in this Safety Data Sheet is correct to the best of our knowledge at the date of publication. It relates only to the specific product identified and does not relate to its use in combination with other materials. ALLIANCE CHEMICAL MAKES NO WARRANTY, EXPRESS OR IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. ALLIANCE CHEMICAL DOES NOT ASSUME LIABILITY FOR LOSS, INJURY, DAMAGE, OR EXPENSE ARISING FROM THE HANDLING, STORAGE, USE, OR DISPOSAL OF THIS PRODUCT.
Alliance Chemical, 204 South Edmond Street, Taylor, TX 76574. Published by Alliance Chemical from first-party canonical product data. Our authority is hands-on chemical handling, DOT/GHS-compliant shipping, and government-registered distribution — not bench chemistry. This Safety Data Sheet is prepared from the regulatory data on file for this product.