Industrial chemicals · Taylor, TXTechnical Data Sheet
Technical Data Sheet
Deionized Water ACS Reagent Grade
Reagent
- CAS number
- 7732-18-5
- Structure
Structure · PubChem - Grade
- Reagent
Last reviewed 2026-06-17 by Andre Taki, Chief Commercial Officer.
Identity & Composition
- Product Name
- Deionized Water ACS Reagent Grade
- Alliance Code
- deionized-water
- Grade
- Reagent
- Concentration
- —
- CAS Number
- 7732-18-5PubChem
- Formula
- H2OPubChem
- Molecular Weight
- 18.015PubChem
- Product Type
- Pure substance
Specifications
| Test | Specification | Typical | Method | Source |
|---|---|---|---|---|
| Ammonium (NH4) | max. 0.000001% | 0.00000022 % | — | Interpreted |
| Conductivity at 25 °C (ASTM D1193 Type II) | < 1 µS/cm | 0.47 | — | Interpreted |
| Heavy Metals (as Pb) | <= 0.01 ppm | 0.0018 ppm | not stated | Interpreted |
| Iron (Fe) by ICP | max. 0.01 mg/Kg (ppm) | 0.0028 mg/Kg (ppm) | ICP | Interpreted |
| Substances Reducing Permanganate | Passes Test | Passes test | not stated | Interpreted |
| Residue on ignition | max. 0.0002 % | 0.000019 % | — | Interpreted |
| Resistivity at 25 °C (ASTM D1193 Type II) | > 1 MΩ-cm | 2.1 | — | Interpreted |
| Silicate (as SiO₂) | <= 0.01 ppm | 0.0042 ppm | not stated | Interpreted |
| Silicate (SiO2) | max. 0.000001% | 0.00000042 % | — | Interpreted |
| Sodium (Na) by ICP | max. 0.1 mg/Kg (ppm) | 0.014 mg/Kg (ppm) | ICP | Interpreted |
| Sulfate (SO₄) | <= 1.0 ppm | 0.015 ppm | not stated | Interpreted |
| Total organic carbon (TOC) (ASTM D1193 Type II) | < 50 ppb | 18 ppb | — | Interpreted |
| Ultraviolet absorbance, 1 cm, 254 nm | max. 0.01 | 0.001 | — | Interpreted |
| Chloride (Cl) | ≤ 0.4 ppm | 0.049 ppm | not stated | Interpreted |
| Nitrate (NO₃) | ≤ 0.4 ppm | 0.026 ppm | not stated | Interpreted |
| Phosphate (PO₄) | ≤ 1.0 ppm | 0.011 ppm | not stated | Interpreted |
| Residue after Evaporation | ≤ 0.0002 % | 0.000019 % | not stated | Interpreted |
| Specific Conductance at 25°C | ≤ 2.0 µS/cm at 25 °C | 0.47 | not stated | Interpreted |
| Calcium (Ca) by ICP | max. 0.1 mg/Kg (ppm) | 0.0055 mg/Kg (ppm) | ICP-OES (ASTM D1976 / EPA 200.7) | Interpreted |
| Magnesium (Mg) by ICP | max. 0.1 mg/Kg (ppm) | 0.0032 mg/Kg (ppm) | ICP-OES (ASTM D1976 / EPA 200.7) | Interpreted |
| Potassium (K) by ICP | max. 0.1 mg/Kg (ppm) | 0.012 mg/Kg (ppm) | ICP-OES (ASTM D1976 / EPA 200.7) | Interpreted |
| Copper (Cu) by ICP | max. 0.01 mg/Kg (ppm) | 0.0026 mg/Kg (ppm) | ICP-OES (ASTM D1976 / EPA 200.7) | Interpreted |
| Nickel (Ni) by ICP | max. 0.01 mg/Kg (ppm) | 0.0013 mg/Kg (ppm) | ICP-OES (ASTM D1976 / EPA 200.7) | Interpreted |
| Manganese (Mn) by ICP | max. 0.01 mg/Kg (ppm) | 0.00045 mg/Kg (ppm) | ICP-OES (ASTM D1976 / EPA 200.7) | Interpreted |
| Zinc (Zn) by ICP | max. 0.01 mg/Kg (ppm) | 0.0031 mg/Kg (ppm) | ICP-OES (ASTM D1976 / EPA 200.7) | Interpreted |
| Lead (Pb) by ICP | max. 0.01 mg/Kg (ppm) | 0.00047 mg/Kg (ppm) | ICP-OES (ASTM D1976 / EPA 200.7) | Interpreted |
Values are reproduced from the current product reference. Source labels do not by themselves establish a supplier guarantee or a test result for your lot. Confirm applicable acceptance limits and request lot-specific documentation.
Physical & Chemical Properties
| Property | Value | Source |
|---|---|---|
| Appearance | Clear, colorless liquid | Adjudicated |
| Form | Liquid | Adjudicated |
| Color | Colorless | Adjudicated |
| Odor | Odorless | Adjudicated |
| pH | 5.0 – 7.5 | Adjudicated |
| Specific Gravity | 0.998 | Adjudicated |
| Density | 0.998 g/cm³ at 20 °C | Adjudicated |
| Boiling Point | 100 °C (212 °F) at 760 mmHg | Adjudicated |
| Melting Point | 0 °C (32 °F) | Adjudicated |
| Flash Point | Not applicable | Adjudicated |
| Vapor Pressure | 17.5 mmHg at 20 °C | Adjudicated |
| Vapor Density | 0.62 (air = 1) | Adjudicated |
| Solubility (water) | Not applicable | Adjudicated |
| Refractive Index (nD 20) | 1.333 | Adjudicated |
| Viscosity | 1.002 mPa·s at 20 °C | Adjudicated |
Regulatory & Transport
DOT / 49 CFR
- UN Number
- Not regulatedAdjudicated
- Hazard Class
- Not regulatedAdjudicated
- Packing Group
- Not regulatedAdjudicated
- Proper Shipping Name
- Not regulatedAdjudicated
GHS / OSHA HCS 2024
- Signal Word
- Not regulatedAdjudicated
- H-Codes (Hazard Statements)
- Not applicableAdjudicated
- P-Codes (Precautionary Statements)
- Not applicableAdjudicated
Occupational Exposure Limits
- OSHA PEL (29 CFR 1910.1000)
- —no canonical
- ACGIH TLV
- —no canonical
- NIOSH REL
- —no canonical
- NIOSH IDLH
- —no canonical
Transport descriptions reflect 49 CFR 172.101 lookup at time of publication. Sourced data: NIOSH Pocket Guide for REL/IDLH, OSHA Z-Tables for PEL. Always verify against the latest regulatory text before shipment-critical decisions.
Supplier Qualification Packet
One zipped download containing the TDS, SDS, latest lot COA (when available), and a fresh Letter of Continuing Guaranty for Deionized Water ACS Reagent Grade. Every file included is SHA-256 hashed and listed in a manifest your QA team can audit.
Applications
- Reagent water for use in laboratory analysis, meeting ISO 3696 type 2 specificationsitwreagents.com
- Most widely used laboratory reagent, present in most laboratory processes and solutionsitwreagents.com
- General laboratory, industrial process, agricultural and utility useitwreagents.com
- Chemical manufacturing: solution preparation, chemical dilution and apparatus cleaningpuretecwater.com
- Academic and research laboratory use in chemistry, biology and environmental science experimentspuretecwater.com
Applications are drawn from published manufacturer and supplier documentation; each is sourced. Suitability for a specific use is the buyer's to confirm.
Storage & Handling
- Recommended Storage
- Store in the original container in a cool, dry, well-ventilated place; keep container closed when not in use.Adjudicated
- Handling Precautions
- Use standard chemical PPE — splash goggles, gloves, lab coat. Refer to SDS for hazard-specific PPE requirements.Class-level guidance — not product-specific; the SDS controls.
- Incompatibilities
- Strong acids; strong bases.Adjudicated
- Shelf Life
- 60 monthsdigitalassets.avantorsciences.com
For full hazard, PPE, and emergency response guidance, refer to the Safety Data Sheet (SDS) for this product. The SDS controls in all cases where guidance differs.
Packaging & Logistics
Shipping Description (US DOT)
Not regulated for transport.
Confirm against shipping documents and carrier requirements before tender.
NMFC Class
55
Revision History
Last reviewed 2026-06-17 by Andre Taki, Chief Commercial Officer, DOT Hazmat–certified (49 CFR 172.704).
| Version | Date | Change | Trigger |
|---|---|---|---|
| 1.4 | 2026-10-13 | Canonical data updated: 4 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.3 | 2026-10-02 | Canonical data updated: 2 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.2 | 2026-07-31 | Canonical data updated: 15 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.1 | 2026-06-17 | Canonical data re-verified: 3 fields updated against independent vendor SDSs, CLP Annex VI, 49 CFR, and OSHA HazCom 2024 (GHS classification, hazard/precautionary codes, signal word, physical properties as applicable).
| canonical_change |
| 1.0 | 2026-05-20 | Initial URL-first TDS published from canonical chemistry registry. | initial |
This Technical Data Sheet is provided for technical reference. The Safety Data Sheet (SDS) controls in all cases where guidance differs. Values reflect Alliance Chemical canonical data at time of generation; subsequent revisions are recorded in the Revision History above.