Industrial chemicals · Taylor, TXTechnical Data Sheet
Nitric Acid 70% ACS Grade - Low Particle
ACS Grade · 70%
- CAS number
- 7697-37-2
- UN number
- UN2031
- Hazard class · packing group
- 8 · PG II
- Structure
Structure · PubChem - Grade
- ACS Grade · 70%
- Signal word
- Danger
- Hazards
- Proper shipping name
- Nitric acid, other than red fuming, with at least 65 percent, but not more than 70 percent nitric acid
Identity & Composition
- Product Name
- Nitric Acid 70% ACS Grade - Low Particle
- Alliance Code
- nitric-acid-70-acs-grade-low-particle
- Grade
- ACS Grade
- Concentration
- 70%
- CAS Number
- 7697-37-2PubChem
- Formula
- HNO3PubChem
- Molecular Weight
- —PubChem
- Product Type
- Solution
Specifications
| Test | Specification | Typical | Method | Source |
|---|---|---|---|---|
| Assay (HNO3) | 68.0 - 70.0% | 69.9 % | — | Interpreted |
| Arsenic (As) | Max 0.01 ppm | 0.0011 ppm | — | Interpreted |
| Chloride (Cl) | Max 0.5 ppm | 0.08 ppm | — | Interpreted |
| Color (APHA) | Max 10 | 6 | — | Interpreted |
| Heavy Metals (as Pb) | Max 0.2 ppm | 0.017 ppm | — | Interpreted |
| Iron (Fe) | Max 0.2 ppm | 0.031 ppm | — | Interpreted |
| Mercury (Hg) | Max 0.005 ppm | 0.00013 ppm | — | Interpreted |
| Nickel (Ni) | Max 0.05 ppm | 0.0059 ppm | — | Interpreted |
| Phosphate (PO4) | 0.0001 % | 0.000007 % | — | Interpreted |
| Residue after Ignition | Max 5 ppm | 0.9 ppm | — | Interpreted |
| Sulfate (SO4) | Max 1 ppm | 0.21 ppm | — | Interpreted |
| Particulate matter, >= 0.5 um | Max 100 particles/mL | 12 | Light-obscuration liquid particle counter | Interpreted |
| Substances reducing permanganate (as HNO2) | Max 0.0005 % | 0.00010 % | Titrimetric, KMnO4 decolorization | 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 | 70% | — | current | current |
| Technical | 70% | — | nitric-acid-70-technical-grade | View TDS → |
| ACS Grade | 69% | — | nitric-acid-acs-69-55-gallon-drum | View TDS → |
| Technical | 69% | — | nitric-acid-69-technical-grade | View TDS → |
| ACS Grade | 65% | — | nitric-acid-65 | View TDS → |
| Technical | 65% | — | nitric-acid-65-technical-grade | View TDS → |
| Technical | 40% | — | nitric-acid-40 | View TDS → |
| Technical | 30% | — | nitric-acid-30 | View TDS → |
| Technical | 25% | — | nitric-acid-25 | View TDS → |
| Technical | 20% | — | nitric-acid-20 | View TDS → |
| Technical | 5% | — | nitric-acid-5 | 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 | Colorless to pale yellow liquid | Adjudicated |
| Form | Liquid | Published reference |
| Odor | Pungent, acrid (choking) odor | Adjudicated |
| pH | < 1 at 20 °C | Adjudicated |
| Specific Gravity | 1.413 | Published reference |
| Density | 1.404 - 1.414 | Interpreted |
| Boiling Point | 119.3 to 120.5 °C (247 to 249 °F) (aqueous solution) | Adjudicated |
| Melting Point | -41 °C (-42 °F), freezing point (aqueous solution) | Adjudicated |
| Flash Point | Not applicable | Adjudicated |
| Vapor Pressure | 7–8 mmHg (9.4–11 hPa) at 20 °C | Adjudicated |
| Vapor Density | 2.2–2.3 (air = 1) | 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 Construction
| Material | Rating | Conditions | Source |
|---|---|---|---|
| PTFE (Teflon) | Compatible | recommended as a cap for bottles of concentrated nitric acid | itwreagents.com |
| chromium | Compatible | hot nitric acid; protective oxide layer forms (no concentration stated) | itwreagents.com |
| platinum (also gold, iridium) | Compatible | nitric acid alone; attacked by aqua regia (nitric plus hydrochloric acid). No concentration stated. | itwreagents.com |
| most metals (general) | Not recommended | no concentration stated; reaction evolves toxic nitrogen dioxide | itwreagents.com |
| PTFE (Teflon) bottle cap | Compatible | concentrated nitric acid; concentration and temperature not stated | itwreagents.com |
Compatibility is drawn from published manufacturer and supplier documentation for this product; each rating is sourced. Confirm against your specific duty cycle before equipment selection.
Regulatory & Transport
DOT / 49 CFR
- UN Number
- UN2031Adjudicated
- Hazard Class
- 8Adjudicated
- Packing Group
- IIAdjudicated
- Proper Shipping Name
- Nitric acid, other than red fuming, with at least 65 percent, but not more than 70 percent nitric acidAdjudicated
GHS / OSHA HCS 2024
- Signal Word
- DangerAdjudicated
- H-Codes (Hazard Statements)
- EUH071, H272, H290, H314, H331Adjudicated
- P-Codes (Precautionary Statements)
- P210, P220, P234, P260, P264, P271, P280, P284, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P311, P320, P321, P363, P370+P378, P390, P403+P233, P405, P406, P501Adjudicated
Occupational Exposure Limits
- OSHA PEL (29 CFR 1910.1000)
- 2 ppm TWAOSHA 29 CFR 1910.1000
- ACGIH TLV
- 2 ppm TWA / 4 ppm STELAdjudicated
- NIOSH REL
- 2 ppm TWA / 4 ppm STELNIOSH Pocket Guide
- NIOSH IDLH
- 25 ppmNIOSH 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
- LC₅₀ Inhalation (rat, 4 h)
- > 2.65 mg/LAdjudicated
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 Nitric Acid 70% ACS Grade - Low Particle. 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 |
|---|---|---|---|---|
| 438073 | ACS Reagent | 70% | Unverified candidate | ACS Reagent fuming-free 70% |
Cross-references are informational. Confirm against the manufacturer's current specification before substitution. Competitor trademarks are property of their respective owners.
Applications
- Raw material in the chemical industry for producing nitrates and fertilizers, and as separating water for parting gold and silveritwreagents.com
- Used in the production of fertilizers, dyes and explosivesitwreagents.com
- Used to produce soluble metal nitratesitwreagents.com
- Analytical detection of aromatic amino acids and proteins via the xanthoprotein reactionitwreagents.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 away from combustible and organic materials, reducing agents, bases and metals, and not on wooden floors or pallets. Use glass, PTFE, PVC or stainless-steel containers, never ordinary metal containers. Protect from sunlight and heat.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
- Combustible and organic materials (wood, paper, oils); alcohols, acetone, acetic anhydride, acetonitrile and acrylonitrile; reducing agents; bases; alkali metals, metal powders and most metals (releases hydrogen and nitrogen oxides); cyanides and sulfides.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)
UN2031, Nitric acid, other than red fuming, with at least 65 percent, but not more than 70 percent nitric acid, 8, PG II
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 |
|---|---|---|---|
| 1.5 | 2026-10-05 | Canonical data updated: 19 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.4 | 2026-09-30 | Canonical data updated: 3 fields changed via the provenance/adjudication pipeline.
| canonical_change |
| 1.3 | 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: 6 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 |
| 1.2 | 2026-07-17 | Canonical data updated: 3 fields changed via the provenance/adjudication pipeline.
| 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.