Industrial chemicals · Taylor, TXTechnical Data Sheet
Phosphoric Acid 85% ACS Grade
ACS Grade · 85%
- CAS number
- 7664-38-2
- UN number
- UN1805
- Hazard class · packing group
- 8 · PG III
- Structure
Structure · PubChem - Grade
- ACS Grade · 85%
- Signal word
- Danger
- Hazards
- Proper shipping name
- Phosphoric acid solution
Identity & Composition
- Product Name
- Phosphoric Acid 85% ACS Grade
- Alliance Code
- phosphoric-acid-85-acs-grade
- Grade
- ACS Grade
- Concentration
- 85%
- CAS Number
- 7664-38-2PubChem
- Formula
- —PubChem
- Molecular Weight
- —PubChem
- Product Type
- Solution
Specifications
| Test | Specification | Typical | Method | Source |
|---|---|---|---|---|
| Assay (H3PO4) | 85.0% min. | 85.01 % | — | Interpreted |
| Arsenic (As) | 1 ppm Max. | 0.028 ppm | — | Interpreted |
| Calcium (Ca) | 0.002% Max | 0.00011 % | — | Interpreted |
| Chloride (Cl) | 3 ppm Max. | 0.29 ppm | — | Interpreted |
| Color (APHA) | Max 10 | 4 | — | Interpreted |
| Heavy metals (as Pb) | 0.001 % max | 0.00010 % | — | Interpreted |
| Insoluble matter | 0.001% Max. | 0.000050 % | — | Interpreted |
| Iron (Fe) | 0.003% Max | 0.00011 % | — | Interpreted |
| Magnesium (Mg) | 0.002% Max | 0.00018 % | — | Interpreted |
| Nitrate (NO3) | 5 ppm Max. | 0.52 ppm | — | Interpreted |
| KMnO4 reducible matter (as O) | ≤0.001% | 0.000025 % | — | Interpreted |
| Reducing substances | Passes Test | Passes test | — | Interpreted |
| Sodium (Na) | 0.025% Max. | 0.0017 % | — | Interpreted |
| Sulfate (SO4) | 0.003% Max | 0.00066 % | — | Interpreted |
| Volatile acids (as CH3COOH) | ≤0.001% | 0.00013 % | — | 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 ACS Grade | 85% | — | current | current |
| USP Food Grade | 85% | — | phosphoric-acid-85-usp-food-grade | View TDS → |
| USP Food Grade | 75% | — | phosphoric-acid-75-usp-food-grade | View TDS → |
| Technical | 50% | — | phosphoric-acid-50-technical-grade | View TDS → |
| ACS | 45% | — | phosphoric-acid-45-acs-grade | View TDS → |
| Technical | 30% | — | phosphoric-acid-30-the-ultimate-rust-remover-solution | View TDS → |
| Food | 20% | — | phosphoric-acid-20-food-grade | View TDS → |
| Technical | 20% | — | phosphoric-acid-20-technical-grade | View TDS → |
| Technical | 15% | — | phosphoric-acid-15-technical-grade | View TDS → |
| ACS | 10% | — | phosphoric-acid-10-acs-grade | View TDS → |
| ACS | 5% | — | phosphoric-acid-5-acs-grade | View TDS → |
| Technical | 5% | — | phosphoric-acid-5-technical-grade | View TDS → |
| Technical | — | — | phosphoric-acid-45-technical-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 liquid | Adjudicated |
| Form | Liquid | Published reference |
| Odor | Odorless | Adjudicated |
| pH | < 1 | Adjudicated |
| Specific Gravity | 1.69 at 25 °C (water = 1) | Adjudicated |
| Density | 1.685 (85% solution, 25 °C) | Published reference |
| Boiling Point | 158 °C (316 °F) | Adjudicated |
| Melting Point | 21 °C (70 °F) | Adjudicated |
| Flash Point | Non-flammable | Published reference |
| Vapor Pressure | 2.2 mmHg at 20 °C (water vapor) | Adjudicated |
| Solubility (water) | Miscible with water in all proportions (releases heat) | Adjudicated |
Strong acid — density and vapor-pressure values shown are at 20 °C; values shift markedly with concentration and temperature. Reference concentration-temperature curves before specifying equipment.
Materials of ConstructionService envelope ≈ 85%
MOC ratings are required for this chemical class but no compatibility data has been seeded yet. Treat as no-data and consult Alliance Technical Services before equipment selection.
Regulatory & Transport
DOT / 49 CFR
- UN Number
- UN1805Adjudicated
- Hazard Class
- 8Adjudicated
- Packing Group
- IIIAdjudicated
- Proper Shipping Name
- Phosphoric acid solutionAdjudicated
GHS / OSHA HCS 2024
- Signal Word
- DangerAdjudicated
- H-Codes (Hazard Statements)
- H290, H302, H314Adjudicated
- P-Codes (Precautionary Statements)
- P234, P260, P264, P270, P280, P301+P312, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P330, P363, P390, P405, P406, P501Adjudicated
Occupational Exposure Limits
- OSHA PEL (29 CFR 1910.1000)
- 1 mg/m³ TWAOSHA 29 CFR 1910.1000
- ACGIH TLV
- 1 mg/m³ TWA / 3 mg/m³ STELAdjudicated
- NIOSH REL
- 1 mg/m³ TWA / 3 mg/m³ STELNIOSH Pocket Guide
- NIOSH IDLH
- 1000 mg/m³NIOSH Pocket Guide
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.
Health & Fire Hazard
Acute Toxicology
- LD₅₀ Oral (rat)
- 1,530 mg/kg (as phosphoric acid); ATE about 1,800 mg/kg for the 85% solutionAdjudicated
- LD₅₀ Dermal (rabbit)
- 2,740 mg/kg (as phosphoric acid)Adjudicated
Acute toxicology values from SDS Section 11 or NIOSH RTECS.
Supplier Qualification Packet
One zipped download containing the TDS, SDS, latest lot COA (when available), and a fresh Letter of Continuing Guaranty for Phosphoric Acid 85% ACS Grade. Every file included is SHA-256 hashed and listed in a manifest your QA team can audit.
Catalog EquivalentsCross-reference vs major chemical suppliers
Sigma-Aldrich
| SKU | Grade | Conc. | Match | Notes |
|---|---|---|---|---|
| 345245 | ACS Reagent | 85% | Unverified candidate | ACS Reagent ≥85% |
Cross-references are informational. Confirm against the manufacturer's current specification before substitution. Competitor trademarks are property of their respective owners.
Applications
- Fertilizer manufacture, and use as a pH modifier, sanitizing agent and rust converterlaballey.com
- Manufacture of phosphate salts for fertilizerslaballey.com
- Supplied for laboratory, research or manufacturing use as ACS reagent-grade materialdigitalassets.avantorsciences.com
- Used in fertilizer, cosmetics, foods and beverages, food-industry sanitation, dental cleaning, and rust conversion.laballey.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 corrosion-resistant containers (polyethylene, fiberglass or stainless steel, not mild steel) away from bases, bleach and metals. Store above 21 °C (70 °F) or expect crystallization; warm gently to re-melt.Adjudicated
- Handling Precautions
- Use full PPE including face shield, acid-resistant gloves and apron. Add acid to water slowly with stirring; never reverse. Ventilation required.Class-level guidance — not product-specific; the SDS controls.
- Incompatibilities
- Strong bases (violent reaction); bleach and other hypochlorite solutions (release chlorine gas) and ammonia; most metals (release flammable hydrogen); sulfides, sulfites and cyanides (release toxic gases); nitromethane (explosive mixtures).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)
UN1805, Phosphoric acid solution, 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 |
|---|---|---|---|
| 1.6 | 2026-10-08 | Canonical data updated: 17 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.5 | 2026-10-07 | Canonical data updated: 3 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.4 | 2026-10-05 | Canonical data updated: 1 field changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.3 | 2026-09-30 | 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.