Industrial chemicals · Taylor, TXTechnical Data Sheet
Technical Data Sheet
Hydrochloric Acid 25% Technical Grade
Technical · 25%
- CAS number
- 7647-01-0
- UN number
- UN1789
- Hazard class · packing group
- 8 · PG II
- Structure
Structure · PubChem - Grade
- Technical · 25%
- Signal word
- Danger
- Hazards
- Proper shipping name
- Hydrochloric acid
Last reviewed 2026-07-17 by Andre Taki, Chief Commercial Officer.
Identity & Composition
- Product Name
- Hydrochloric Acid 25% Technical Grade
- Alliance Code
- hydrochloric-acid-25-technical-grade
- Grade
- Technical
- Concentration
- 25%
- CAS Number
- 7647-01-0PubChem
- Formula
- HClAdjudicated
- Molecular Weight
- 36.46PubChem
- Product Type
- Solution
Specifications
| Test | Specification | Typical | Method | Source |
|---|---|---|---|---|
| Assay (HCl) | 24.5 - 25.5 % | 24.98 % | — | Interpreted |
| Color, APHA | 20 max | 8 | — | Interpreted |
| Free chlorine (as Cl2) | 8 ppm max | 0.40 ppm | DPD colorimetric | Interpreted |
| Nonvolatile matter | 80 ppm max | 11.3 ppm | Gravimetric, evaporation to dryness at 105 C | Interpreted |
| Arsenic (As) | 0.4ppm max | 0.018 ppm | — | Interpreted |
| Fluorinated organic compounds | 20ppm max | 0.25 ppm | — | Interpreted |
| Heavy metals (as Pb) | 0.81ppm max | 0.072 ppm | — | Interpreted |
| Oxidizing substances (as Cl2) | 8.1ppm max | 0.55 ppm | — | Interpreted |
| Sulfate (SO4) | 49 ppm max | 7.9 ppm | — | Interpreted |
| Total organic compounds (non-fluorine-containing) | 4ppm max | 0.35 ppm | — | Interpreted |
| Iron (Fe) | 2.4 ppm max | 0.29 ppm | ICP-MS | Interpreted |
| Composition | 25 % hydrochloric acid 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 | 25% | — | current | current |
| ACS Reagent | 37% | — | hydrochloric-acid-37-acs-reagent-grade | View TDS → |
| Technical Grade | 37% | — | hydrochloric-acid-37-hcl-37-technical-grade | View TDS → |
| ACS | 31% | — | hydrochloric-acid-31-acs-grade | View TDS → |
| Technical Grade | 31% | — | hydrochloric-acid-31-technical-grade | View TDS → |
| ACS | 25% | — | hydrochloric-acid-25-acs-grade | View TDS → |
| ACS | 20% | — | hydrochloric-acid-20-acs-grade | View TDS → |
| Technical | 20% | — | hydrochloric-acid-20-technical-grade | View TDS → |
| Technical Grade | 15% | — | hydrochloric-acid-15-technical-grade | View TDS → |
| ACS | 10% | — | hydrochloric-acid-10-acs-grade | View TDS → |
| Technical | 10% | — | hydrochloric-acid-10-technical-grade | View TDS → |
| ACS | 5% | — | hydrochloric-acid-5-acs-grade | View TDS → |
| Technical Grade | 5% | — | hydrochloric-acid-5-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 to slightly yellow liquid with HCl odor | Adjudicated |
| Odor | Pungent, irritating odor | Adjudicated |
| pH | < 1 | Adjudicated |
| Specific Gravity | 1.12–1.13 at 20 °C (water = 1) | Adjudicated |
| Boiling Point | About 105–108 °C (221–226 °F); the HCl–water azeotrope (20.2%) boils at 108.6 °C | Adjudicated |
| Melting Point | About -74 °C (-101 °F), freezing point | Adjudicated |
| Flash Point | Not applicable | Adjudicated |
| Solubility (water) | Completely miscible with water | 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 ≈ 25%
| 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 |
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 16 of 16 material ratings within 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). |
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
- UN1789Adjudicated
- Hazard Class
- 8Adjudicated
- Packing Group
- IIAdjudicated
- Proper Shipping Name
- Hydrochloric acidAdjudicated
GHS / OSHA HCS 2024
- Signal Word
- DangerAdjudicated
- H-Codes (Hazard Statements)
- H290, H314, H335Adjudicated
- P-Codes (Precautionary Statements)
- P234, P260, P261, P264, P271, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P363, P390, P403+P233, P405, P406, P501Adjudicated
Occupational Exposure Limits
- OSHA PEL (29 CFR 1910.1000)
- 5 ppm ceilingOSHA 29 CFR 1910.1000
- ACGIH TLV
- 2 ppm CeilingAdjudicated
- NIOSH REL
- 5 ppm CeilingAdjudicated
- NIOSH IDLH
- 50 ppmAdjudicated
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 Hydrochloric Acid 25% 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
Honeywell
| SKU | Grade | Conc. | Match | Notes |
|---|---|---|---|---|
| 258148 | ACS | 37% | Unverified candidate | Fluka brand, ACS grade |
Cross-references are informational. Confirm against the manufacturer's current specification before substitution. Competitor trademarks are property of their respective owners.
Applications
- Pickling and metal cleaning agent in metal processing, to remove oxides and scalechemceed.com
- Oil well acidizing — dissolves calcium and magnesium carbonate rock formations to increase permeability and productionchemceed.com
- Beneficiation of ores and rock phosphate; stimulation of oil and gas wells in carbonate and sandstone reservoirsitwreagents.com
- Metallurgical pickling, etching and brazingitwreagents.com
- Removal of calcium carbonate (scale) deposits from equipment and cleaning of boreholes and gravel-pack filters after drillingitwreagents.com
- Dilute acid used in construction to remove mortar residue from masonry and lime film from tiles after groutingitwreagents.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
- Store in a cool, well-ventilated area in closed, vented, corrosion-resistant containers (polyethylene or glass). Keep away from bleach and other oxidizers, bases and metals.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
- Bases, hydroxides, carbonates, amines and ammonia; oxidizers, including sodium hypochlorite (bleach) (release chlorine gas); most metals (release flammable hydrogen); cyanides and sulfides (release toxic gas).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)
UN1789, Hydrochloric acid, 8, PG II
Sourced from 49 CFR 172.101. Confirm against shipping documents and carrier requirements before tender.
NMFC Class
60
Placard
Corrosive
Packing Group
PG II
Revision History
Last reviewed 2026-07-17 by Andre Taki, Chief Commercial Officer, DOT Hazmat–certified (49 CFR 172.704).
| Version | Date | Change | Trigger |
|---|---|---|---|
| 1.8 | 2026-10-08 | Canonical data updated: 20 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: 2 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.5 | 2026-09-30 | Canonical data updated: 3 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.4 | 2026-08-27 | Canonical data updated: 2 fields 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: 4 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.