Industrial chemicals · Taylor, TXTechnical Data Sheet
Phosphoric Acid 85% ACS Grade
ACS Grade · 85%
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
- H3O4PPubChem
- Molecular Weight
- 97.995PubChem
- Product Type
- solution
Specifications
| Test | Specification | Typical | Method | Source |
|---|---|---|---|---|
| Assay (H3PO4) | 85.0% min. | 85.0 % | — | ACS Reagent Chemicals |
| Arsenic (As) | 1 ppm Max. | 0.03 ppm | — | ACS Reagent Chemicals |
| Calcium (Ca) | 0.002% Max | 0.0002 % | — | ACS Reagent Chemicals |
| Chloride (Cl) | 3 ppm Max. | 0.4 ppm | — | ACS Reagent Chemicals |
| Heavy metals (as Pb) | 0.001 % max | 0.0001 % | — | ACS Reagent Chemicals |
| Insoluble matter | 0.001% Max. | 0.001 % | — | ACS Reagent Chemicals |
| Iron (Fe) | 0.003% Max | 0.0001 % | — | ACS Reagent Chemicals |
| Magnesium (Mg) | 0.002% Max | 0.0002 % | — | ACS Reagent Chemicals |
| Nitrate (NO3) | 5 ppm Max. | 0.5 ppm | — | ACS Reagent Chemicals |
| KMnO4 reducible matter (as O) | ≤0.001% | 0.00004 % | — | Supplier specification |
| Reducing substances | Passes Test | Passes test | — | ACS Reagent Chemicals |
| Sodium (Na) | 0.025% Max. | 0.002 % | — | ACS Reagent Chemicals |
| Sulfate (SO4) | 0.003% Max | 0.0005 % | — | ACS Reagent Chemicals |
| Volatile acids (as CH3COOH) | ≤0.001% | 0.0002 % | — | Supplier specification |
Specification values are guaranteed limits. Typical values are representative of production lots and are not guaranteed. Lot-specific certificates of analysis ship with every order.
Available GradesSame CAS, alternate grades and concentrations
| Grade | Concentration | Typical Assay | SKU | TDS |
|---|---|---|---|---|
| This grade ACS Grade | 85% | — | current | current |
| — | 75% | — | phosphoric-acid-75 | View TDS → |
| USP Food Grade | 75% | — | phosphoric-acid-75-usp-food-grade | View TDS → |
| ACS | 50% | — | phosphoric-acid-50-acs-grade | View TDS → |
| Technical | 50% | — | phosphoric-acid-50-technical-grade | View TDS → |
| ACS | 30% | — | phosphoric-acid-30-acs-grade | View TDS → |
| Food | 20% | — | phosphoric-acid-20-food-grade | View TDS → |
| Technical | 20% | — | phosphoric-acid-20-technical-grade | View TDS → |
| Technical | 10% | — | phosphoric-acid-10-technical-grade | View TDS → |
| Food | 5% | — | phosphoric-acid-5-food-grade | View TDS → |
| Technical | 5% | — | phosphoric-acid-5-technical-grade | View TDS → |
| Food | — | — | phosphoric-acid-45-food-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 viscous liquid | Published reference |
| Form | Liquid | Published reference |
| Color | Max 10 | ACS Reagent Chemicals |
| Odor | Odorless | Published reference |
| pH | pH = 1.5 (0.1 N aqueous solution) | Published reference |
| Specific Gravity (20 °C) | 1.686 - 1.692 | Interpreted |
| Density | 1.685 (85% solution, 25 °C) | Published reference |
| Boiling Point | 158 °C (316 °F) | Published reference |
| Melting Point | 21 °C (70 °F) | Published reference |
| Flash Point | Non-flammable | Published reference |
| Vapor Pressure | 0.3 kPa at 20 °C | Published reference |
| Solubility (water) | Miscible (NIOSH, 2024) | Published reference |
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%
| Material | Rating | Max T (°C) | Notes | Source |
|---|---|---|---|---|
Buna-N (NBR) elastomer | Poor | — | Swells and degrades | Cole-Parmer Chemical Compatibility |
EPDM elastomer | Good | 40 | Acceptable but FKM preferred | Cole-Parmer Chemical Compatibility |
Viton (FKM) elastomer | Excellent | 80 | Preferred elastomer | Cole-Parmer Chemical Compatibility |
PTFE fluoropolymer | Excellent | 200 | Universal acid compatibility. | Cole-Parmer Chemical Compatibility |
Borosilicate Glass glass ceramic | Excellent | 100 | Inert to most strong acids (avoid HF). | Cole-Parmer Chemical Compatibility |
Glass (borosilicate) glass ceramic | Excellent | 100 | Inert under all conditions | Cole-Parmer Chemical Compatibility |
316 stainless steel metal | Poor | 25 | Severe pitting; use only for vapors | Cole-Parmer Chemical Compatibility |
Aluminium metal | Not recommended | — | Reacts to form H2 gas | Cole-Parmer Chemical Compatibility |
Carbon Steel metal | Not recommended | — | Catastrophic corrosion; never use. | Cole-Parmer Chemical Compatibility |
Hastelloy C-276 metal | Excellent | 90 | Premium HCl alloy | Cole-Parmer Chemical Compatibility |
Inconel 625 metal | Good | 60 | Acceptable for dilute service | Cole-Parmer Chemical Compatibility |
Tantalum metal | Excellent | 100 | Best-in-class but expensive | Cole-Parmer Chemical Compatibility |
CPVC thermoplastic | Excellent | 90 | Preferred for elevated temperature | Cole-Parmer Chemical Compatibility |
FRP (vinyl ester) thermoplastic | Good | 60 | Common bulk-storage tank material | Cole-Parmer Chemical Compatibility |
HDPE thermoplastic | Excellent | 60 | Standard drum / IBC material | Cole-Parmer Chemical Compatibility |
PVC thermoplastic | Excellent | 60 | Standard piping for ambient service | Cole-Parmer Chemical Compatibility |
Ratings reflect the service envelope (concentration × temperature) shown. Always confirm against your specific duty cycle and contact-time before equipment selection. The most cautious rating across overlapping references is shown.
Materials Selection Tool
Showing 16 of 16 materials compatible at the selected envelope.
| Material | Rating | Max T (°C) | Notes |
|---|---|---|---|
Buna-N (NBR) elastomer | Poor | — | Swells and degrades |
EPDM elastomer | Good | 40 | Acceptable but FKM preferred |
Viton (FKM) elastomer | Excellent | 80 | Preferred elastomer |
PTFE fluoropolymer | Excellent | 200 | Universal acid compatibility. |
Borosilicate Glass glass ceramic | Excellent | 100 | Inert to most strong acids (avoid HF). |
Glass (borosilicate) glass ceramic | Excellent | 100 | Inert under all conditions |
316 stainless steel metal | Poor | 25 | Severe pitting; use only for vapors |
Aluminium metal | Not recommended | — | Reacts to form H2 gas |
Carbon Steel metal | Not recommended | — | Catastrophic corrosion; never use. |
Hastelloy C-276 metal | Excellent | 90 | Premium HCl alloy |
Inconel 625 metal | Good | 60 | Acceptable for dilute service |
Tantalum metal | Excellent | 100 | Best-in-class but expensive |
CPVC thermoplastic | Excellent | 90 | Preferred for elevated temperature |
FRP (vinyl ester) thermoplastic | Good | 60 | Common bulk-storage tank material |
HDPE thermoplastic | Excellent | 60 | Standard drum / IBC material |
PVC thermoplastic | Excellent | 60 | Standard piping for ambient service |
Regulatory & Transport
DOT / 49 CFR
- UN Number
- UN1805Adjudicated
- Hazard Class
- 8Adjudicated
- Packing Group
- IIIAdjudicated
- Proper Shipping Name
- Phosphoric acid solutionAdjudicated
GHS / OSHA HazCom 2012
- Signal Word
- DangerAdjudicated
- H-Codes (Hazard Statements)
- H290, H314ECHA CLP Annex VI
- P-Codes (Precautionary Statements)
- P234, P260, P264, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P363, P405, P501Adjudicated
Occupational Exposure Limits
- OSHA PEL (29 CFR 1910.1000)
- 1 mg/m³ TWAOSHA 29 CFR 1910.1000
- ACGIH TLV
- —no canonical
- 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: ECHA CLP Annex VI for harmonised classifications, 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 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% | Exact | 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
- Cool, dry, well-ventilated area in compatible containers (lined steel, HDPE, FRP — verify per concentration). Segregate from bases, oxidizers, metals, and cyanides.Class-level guidance — not product-specific; the SDS controls.
- 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
- Bases, active metals (aluminium, zinc), cyanides, sulfides, oxidizing agents. Reacts violently with organic anhydrides.Class-level guidance — not product-specific; the SDS controls.
- 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, DOT Hazmat Specialist.
| Version | Date | Change | Trigger |
|---|---|---|---|
| 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.