Industrial chemicals · Taylor, TXTechnical Data SheetTechnical Data Sheet
Phosphoric Acid 30% - The Ultimate Rust Remover Solution
30%
1. Identity & Composition
- Product Name
- Phosphoric Acid 30% - The Ultimate Rust Remover Solution
- Alliance Code
- phosphoric-acid-30-the-ultimate-rust-remover-solution
- Grade
- —
- Concentration
- 30%
- CAS Number
- 7664-38-2PubChem
- Formula
- H3O4PPubChem
- Molecular Weight
- 97.995PubChem
- Product Type
- solution
Available GradesSame CAS, alternate grades and concentrations
| Grade | Concentration | Typical Assay | SKU | TDS |
|---|---|---|---|---|
| This grade — | 30% | — | current | current |
| ACS Grade | 85% | — | phosphoric-acid-85-acs-grade | View TDS → |
| — | — | — | ph-ree-fall-world-class-buffering-solution-for-ph-stability-made-from-phosphoric-acid | View TDS → |
| — | — | — | phosphoric-acid-10-acs-grade | View TDS → |
| — | — | — | phosphoric-acid-10-technical-grade | View TDS → |
| — | — | — | phosphoric-acid-20-food-grade | View TDS → |
| — | — | — | phosphoric-acid-45-acs-grade | View TDS → |
| — | — | — | phosphoric-acid-45-technical-grade | View TDS → |
| — | — | — | phosphoric-acid-5-food-grade | View TDS → |
| — | — | — | phosphoric-acid-5-technical-grade | View TDS → |
| — | — | — | phosphoric-acid-50-acs-grade | View TDS → |
| — | — | — | phosphoric-acid-50-technical-grade | View TDS → |
| ACS Grade | — | — | phosphoric-acid-75-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
One or more physical-property values are temporarily suppressed pending verification against vendor COA data. For complete properties refer to the Safety Data Sheet (SDS) or contact sales@alliancechemical.com.
- Form
- LiquidProduct record
- Odor
- OdorlessProduct record
- pH
- pH = 1.5 (0.1 N aqueous solution)Product record
- Density
- 1.892 at 77 °F (USCG, 1999) - Denser than water; will sinkProduct record
- Boiling Point
- greater than 266 °F at 760 mmHg (USCG, 1999)Product record
- Melting Point
- 108 °F (NIOSH, 2024)Product record
- Flash Point
- 200Product record
- Vapor Pressure
- 0.03 mmHg (NIOSH, 2024)Product record
- Solubility (water)
- Miscible (NIOSH, 2024)Product record
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 | — | Swells and degrades | Cole-Parmer Chemical Compatibility |
EPDM elastomer | Good | 40 | Acceptable but FKM preferred | Cole-Parmer Chemical Compatibility |
Viton (FKM) elastomer | Good | 80 | Acceptable for HCl gaskets up to 37 %. | Parker O-ring Chemical Compatibility |
PTFE fluoropolymer | Excellent | 200 | Lining and gaskets | 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 | — | Aggressive corrosion | 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 18 of 18 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 | Good | 80 | Acceptable for HCl gaskets up to 37 %. |
PTFE fluoropolymer | Excellent | 200 | Lining and gaskets |
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 | — | Aggressive corrosion |
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
- UN1805Vendor Label
- 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, P501ECHA CLP Annex VI
Occupational Exposure Limits
- OSHA PEL (29 CFR 1910.1000)
- 1 mg/m³ TWAOSHA 29 CFR 1910.1000
- ACGIH TLV
- —unknown
- 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. 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.
Application Guidance
Phosphoric Acid 30% - The Ultimate Rust Remover Solution is a strong mineral acid used across pH control, metal pickling, food and beverage processing, and chemical synthesis. Grade and concentration determine the appropriate end-use and materials.
- Metal pickling, etching, and surface preparation
- pH adjustment in water and wastewater treatment
- Regeneration of ion-exchange resins
- Chemical manufacturing and synthesis
- Food and beverage processing (food-grade only)
Always add acid to water, never water to acid. Use lined or fluoropolymer piping rated for the concentration; carbon steel is not suitable for dilute acid service.
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.
- Handling Precautions
- Use full PPE including face shield, acid-resistant gloves and apron. Add acid to water slowly with stirring; never reverse. Ventilation required.
- Incompatibilities
- Bases, active metals (aluminium, zinc), cyanides, sulfides, oxidizing agents. Reacts violently with organic anhydrides.
- Shelf Life
- 24 months from date of manufacture in sealed, original packaging
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 2026-05-20 by Hossein Taki, Vice President (Vice President, Alliance Chemical · CAGE Code 1LT50 · DOT Hazmat Registrant #2188383).
| Version | Date | Change | Trigger |
|---|---|---|---|
| 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.