Industrial chemicals · Taylor, TXTechnical Data Sheet
Sodium Bisulfite 15% Technical Grade
Technical · 15%
- CAS number
- 7631-90-5
- UN number
- UN2693
- Hazard class · packing group
- 8 · PG III
- Structure
Structure · PubChem - Grade
- Technical · 15%
- Signal word
- Danger
- Hazards
- Proper shipping name
- Bisulfites, aqueous solutions, n.o.s.
Identity & Composition
- Product Name
- Sodium Bisulfite 15% Technical Grade
- Alliance Code
- sodium-bisulfite-15-technical-grade
- Grade
- Technical
- Concentration
- 15%
- CAS Number
- 7631-90-5PubChem
- Formula
- —PubChem
- Molecular Weight
- 104.06PubChem
- Product Type
- Solution
Specifications
| Test | Specification | Typical | Method | Source |
|---|---|---|---|---|
| Assay (NaHSO3) | 14.5 - 15.5 % by wt | 15.05 % | — | Interpreted |
| SO2 available | 8.8 - 9.7 % by wt | 9.27 % | — | Interpreted |
| Iron (Fe) | 5.6 ppm max | 0.45 ppm | — | Interpreted |
| Sodium sulfate | 1.3 % max | 0.33 % | — | Interpreted |
| Composition | 15 % sodium hydrogen sulfite in deionized water, by weight | Conforms | By formulation; confirmed by specific gravity | 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.
Available GradesSame CAS, alternate grades and concentrations
| Grade | Concentration | Typical Assay | SKU | TDS |
|---|---|---|---|---|
| This grade Technical | 15% | — | current | current |
| ACS Grade | 40% | — | sodium-bisulfite-40-acs-grade | View TDS → |
| Technical | 40% | — | sodium-bisulfite-40 | View TDS → |
| ACS | 25% | — | sodium-bisulfite-25-acs-grade | View TDS → |
| Technical | 25% | — | sodium-bisulfite-25 | View TDS → |
| ACS | 10% | — | sodium-bisulfite-10-acs-grade | View TDS → |
| Technical | 10% | — | sodium-bisulfite-10-technical-grade | View TDS → |
| ACS | — | — | sodium-bisulfite-15-acs-grade | View TDS → |
Typical assay shown is the rolling-window mean from the sibling product's most recent lots. Grade selection drives downstream end-use — verify the sibling grade matches your specification before substitution.
Physical & Chemical Properties
| Property | Value | Source |
|---|---|---|
| Appearance | Clear, colorless to pale yellow liquid with sulfur odor | Adjudicated |
| Boiling Point | 100°C (solution) | Adjudicated |
Regulatory & Transport
DOT / 49 CFR
- UN Number
- UN2693Adjudicated
- Hazard Class
- 8Adjudicated
- Packing Group
- IIIAdjudicated
- Proper Shipping Name
- Bisulfites, aqueous solutions, n.o.s.Adjudicated
GHS / OSHA HCS 2024
- Signal Word
- DangerAdjudicated
- H-Codes (Hazard Statements)
- EUH031, H302, H318Adjudicated
- P-Codes (Precautionary Statements)
- P264, P270, P280, P301+P312, P305+P351+P338, P310, P330, P501Adjudicated
Occupational Exposure Limits
- OSHA PEL (29 CFR 1910.1000)
- —no canonical
- ACGIH TLV
- —no canonical
- NIOSH REL
- 5 mg/m³ TWANIOSH Pocket Guide
- 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 Sodium Bisulfite 15% Technical Grade. Every file included is SHA-256 hashed and listed in a manifest your QA team can audit.
Applications
- Dechlorination in municipal wastewater, pulp & paper, power, and textile water treatment plantsineos.com
- Oxygen scavenger and boiler water treatmentineos.com
- Preservative in the photo developer processineos.com
- Flue gas desulfurizationineos.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
- Keep tightly closed in a cool, ventilated area in polyethylene, fiberglass or stainless-steel containers, away from acids and oxidizers. Protect from freezing (crystallizes near 5 °C).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
- Acids (release toxic sulfur dioxide gas); oxidizing agents; nitrites and nitrates.Adjudicated
- Shelf Life
- Consult Technical Services for product-specific shelf life
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)
UN2693, Bisulfites, aqueous solutions, n.o.s., 8, PG III
Sourced from 49 CFR 172.101. Confirm against shipping documents and carrier requirements before tender.
Revision History
Last reviewed 2026-07-17 by Andre Taki, Chief Commercial Officer, DOT Hazmat–certified (49 CFR 172.704).
| Version | Date | Change | Trigger |
|---|---|---|---|
| 1.9 | 2026-10-13 | Canonical data updated: 4 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.8 | 2026-10-08 | Canonical data updated: 3 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.7 | 2026-10-07 | Canonical data updated: 3 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.6 | 2026-10-05 | Canonical data updated: 1 field changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.5 | 2026-09-30 | Canonical data updated: 2 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.4 | 2026-08-19 | Canonical data updated: 1 field changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.3 | 2026-08-05 | Canonical data updated: 3 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.2 | 2026-07-22 | Canonical data updated: 2 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.1 | 2026-07-17 | Canonical data re-verified: 5 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.