Industrial chemicals · Taylor, TXTechnical Data Sheet
Phosphoric Acid 30% - The Ultimate Rust Remover Solution Technical Grade
Reagent · 30%
Identity & Composition
- Product Name
- Phosphoric Acid 30% - The Ultimate Rust Remover Solution Technical Grade
- Alliance Code
- phosphoric-acid-30-the-ultimate-rust-remover-solution
- Grade
- Reagent
- Concentration
- 30%
- CAS Number
- 7664-38-2PubChem
- Formula
- H3O4PPubChem
- Molecular Weight
- 97.995PubChem
- Product Type
- solution
Specifications
| Test | Specification | Typical | Method | Source |
|---|---|---|---|---|
| Assay (H3PO4) | 29.5 - 30.5 % | 30.0 % | — | Commercial practice |
| Chloride (as Cl) | 8.8 ppm max. | 1.4 ppm | — | Derived by dilution |
| Iron (as Fe) | 3.5 ppm max. | 1.1 ppm | — | Derived by dilution |
| arsenic | 0.000018 % max | 0.000002 % | — | Derived by dilution |
| cadmium | 0.000035 % max | 0.0000032 % | — | Derived by dilution |
| fluoride | 0.00035 % max | 0.00008 % | — | Derived by dilution |
| heavy metal | 0.00018 % max | 0.00002 % | — | Derived by dilution |
| lead | 0.000036 % max | 0.0000012 % | — | Derived by dilution |
| mercury | 0.000035 % max | 0.0000002 % | — | Derived by dilution |
| nitrates | 0.0002 % max | 0.00002 % | — | Derived by dilution |
| oxidable matter | 0.0042 % max | 0.0006 % | — | Derived by dilution |
| sulfates | 0.0018 % max | 0.00032 % | — | Derived by dilution |
| volatile acid | 0.00035 % max | 0.00006 % | — | Derived by dilution |
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 Reagent | 30% | — | 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 liquid | Published reference |
| Form | Liquid | Published reference |
| Color | 10 max. | Derived by dilution |
| Odor | Odorless | Published reference |
| pH | pH = 1.5 (0.1 N aqueous solution) | Published reference |
| Specific Gravity (20 °C) | 1.177 - 1.184 | Interpreted |
| Density | ≈1.18 (30% w/w aqueous solution, 25 °C) | Published reference |
| Boiling Point | Not characterized for the 30% solution (water-dominated, ~100 °C) | Published reference |
| Melting Point | Not characterized for the 30% solution | Published reference |
| Flash Point | 200 | Published reference |
| Vapor Pressure | Not characterized (water-dominated) | 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 ≈ 30%
| Material | Rating | Max T (°C) | Notes | Source |
|---|---|---|---|---|
Buna-N (NBR) elastomer | Poor | — | Hardens and cracks; do not use. | Parker O-ring Chemical Compatibility |
EPDM elastomer | Good | 80 | Standard for HCl and H2SO4 gaskets. | Parker O-ring Chemical Compatibility |
Viton (FKM) elastomer | Good | 80 | Acceptable for HCl gaskets up to 37 %. | Parker O-ring Chemical Compatibility |
PTFE fluoropolymer | Excellent | 200 | Universal acid compatibility. | Cole-Parmer Chemical Compatibility |
PVDF (Kynar) fluoropolymer | Excellent | 120 | Excellent for HCl piping at elevated temperature. | 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 | 80 | Preferred metal for concentrated HCl service. | Haynes International C-276 datasheet |
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 | Higher-temp variant of PVC. | Cole-Parmer Chemical Compatibility |
FRP (vinyl ester) thermoplastic | Good | 60 | Common bulk-storage tank material | Cole-Parmer Chemical Compatibility |
HDPE thermoplastic | Excellent | 60 | Standard tank/drum material for HCl up to 37 %. | Cole-Parmer Chemical Compatibility |
PVC thermoplastic | Excellent | 60 | Common for piping; verify rating for service > 50 °C. | 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 17 of 17 materials compatible at the selected envelope.
| Material | Rating | Max T (°C) | Notes |
|---|---|---|---|
Buna-N (NBR) elastomer | Poor | — | Hardens and cracks; do not use. |
EPDM elastomer | Good | 80 | Standard for HCl and H2SO4 gaskets. |
Viton (FKM) elastomer | Good | 80 | Acceptable for HCl gaskets up to 37 %. |
PTFE fluoropolymer | Excellent | 200 | Universal acid compatibility. |
PVDF (Kynar) fluoropolymer | Excellent | 120 | Excellent for HCl piping at elevated temperature. |
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 | 80 | Preferred metal for concentrated HCl service. |
Inconel 625 metal | Good | 60 | Acceptable for dilute service |
Tantalum metal | Excellent | 100 | Best-in-class but expensive |
CPVC thermoplastic | Excellent | 90 | Higher-temp variant of PVC. |
FRP (vinyl ester) thermoplastic | Good | 60 | Common bulk-storage tank material |
HDPE thermoplastic | Excellent | 60 | Standard tank/drum material for HCl up to 37 %. |
PVC thermoplastic | Excellent | 60 | Common for piping; verify rating for service > 50 °C. |
Regulatory & Transport
DOT / 49 CFR
- UN Number
- UN180549 CFR 172.101
- 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 30% - The Ultimate Rust Remover Solution Technical 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
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 |
|---|---|---|---|
| 1.3 | 2026-08-05 | Canonical data updated: 1 field changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.2 | 2026-07-22 | Canonical data updated: 1 field 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.