Nitric Acid 65% ACS Grade

Product Identifier

Nitric Acid 65% ACS Grade

Grade

ACS Grade

Concentration

65%

CAS Number

7697-37-2

Chemical Formula

HNO3

Manufacturer

Alliance Chemical
204 South Edmond Street, Taylor, TX 76574

Emergency Phone

Chemtel 1-800-255-3924 (24/7)

Synonyms

Aqua fortis; hydrogen nitrate; azotic acid

Recommended Use

Laboratory and analytical reagent (ACS grade); metal etching, cleaning and passivation; chemical synthesis.

Restrictions on Use

For industrial, professional and laboratory use only. Never mix with organic solvents, alcohols or other combustible materials.

Classification

• Oxidizing liquids, Category 3
• Corrosive to metals, Category 1
• Skin corrosion/irritation, Category 1
• Serious eye damage/eye irritation, Category 1
• Acute toxicity (inhalation), Category 3

Signal Word

Danger

Hazard Statements

• EUH071Corrosive to the respiratory tract
• H272May intensify fire; oxidizer
• H290May be corrosive to metals
• H314Causes severe skin burns and eye damage
• H331Toxic if inhaled

Precautionary Statements

• P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
• P220Keep away from clothing and other combustible materials.
• P234Keep only in original packaging.
• P260Do not breathe dust, fume, gas, mist, vapors or spray.
• P264Wash hands and face thoroughly after handling.
• P271Use only outdoors or in a well-ventilated area.
• P280Wear protective gloves, protective clothing, and eye/face protection.
• P284Wear respiratory protection.
• P301+P330+P331IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
• P303+P361+P353IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
• P304+P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
• P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
• P310Immediately call a POISON CENTER or doctor.
• P311Call a POISON CENTER or doctor.
• P320Specific treatment is urgent (see first-aid information on this label).
• P321Specific treatment (see first-aid information on this label).
• P363Wash contaminated clothing before reuse.
• P370+P378In case of fire: Use water spray or fog in large quantities to extinguish.
• P390Absorb spillage to prevent material damage.
• P403+P233Store in a well-ventilated place. Keep container tightly closed.
• P405Store locked up.
• P406Store in a corrosion resistant container with a resistant inner liner.
• P501Dispose of contents and container in accordance with local, regional, national, and international regulations.

Classification, hazard (H) and precautionary (P) statements and pictograms per OSHA HCS 2024 (29 CFR 1910.1200, Appendices A–C), aligned with GHS Rev. 7.

Concentrations are nominal; lot-specific values appear on the Certificate of Analysis. Components not contributing to classification are omitted.

Eyes

Rinse with plenty of water for at least 15 minutes. Remove contact lenses if present and easy to do. Continue rinsing. Seek medical attention immediately.

Skin

Immediately flush with plenty of water for at least 15 minutes while removing contaminated clothing. Wash with soap. Get medical attention immediately.

Inhalation

Move person to fresh air and keep comfortable for breathing. If breathing is difficult, give oxygen. If not breathing, give artificial respiration. Get medical attention immediately.

Ingestion

Do Not Induce Vomiting! Never give anything by mouth to an unconscious person. If conscious, wash out mouth with water. Get medical attention immediately.

Most Important Symptoms and Effects

• Causes burns to the skin, eyes and mucous membranes; eye contact may cause permanent damage including blindness; ingestion burns the mouth, throat and stomach.
• Inhalation may irritate the nose, throat and respiratory tract (coughing, sore throat).
• Inhalation may cause coughing, shortness of breath and headache; high concentrations may cause systemic poisoning.

Immediate Medical Attention and Special Treatment

• Immediate medical attention is required after eye or skin contact or ingestion; tissue damage may continue after exposure ends.
• Get immediate medical attention after any significant exposure; symptoms may be delayed.

Suitable Extinguishing Media

Water spray or fog in large quantities. Do NOT use dry chemical or CO2.

Unsuitable Extinguishing Media

Do not use dry chemical, CO2, or foam.

Specific Hazards Arising from the Chemical

Oxidizer: may intensify fire and ignite combustible materials (wood, paper, oil). Fire may release corrosive and toxic gases. Containers may rupture when heated.

Protective Equipment

Wear self-contained breathing apparatus and full protective clothing.

Hazardous Combustion Products

Nitrogen oxides, including nitrogen dioxide, and oxygen. Contact with metals releases hydrogen and nitrous gases.

Personal Precautions

Use PPE as described in Section 8. Ensure adequate ventilation. Evacuate personnel to safe areas.

Hazard-Specific Precautions

Keep away from combustible materials. Do not absorb with sawdust, paper or other combustible absorbents. Do not touch spilled material without protective equipment. Neutralize residue only with a method suitable for the material, then collect.

Environmental Precautions

Prevent leakage or spillage from entering drains, sewers, or waterways.

Containment & Cleanup

Absorb with inert material. Collect in appropriate waste container. Dispose per applicable regulations.

Safe Handling

Use with adequate ventilation. Avoid contact with skin, eyes, and clothing. Wash thoroughly after handling. Keep container closed when not in use.

Safe Storage

Store in a cool, dry, well-ventilated area. Use corrosion-resistant containers. Keep away from incompatible materials (see Section 10). Keep containers tightly closed.

Specific Storage Precautions

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.

Occupational Exposure Limits

Engineering Controls

Use adequate ventilation. Provide eyewash stations and quick-drench showers accessible to areas of use.

Eye/Face Protection

Wear chemical safety goggles or face shield.

Skin Protection

Wear chemical-resistant gloves and protective clothing.

Respiratory Protection

Use a NIOSH-approved full-facepiece respirator with cartridges or a canister providing protection against this substance, or a supplied-air respirator. For emergencies, unknown concentrations or IDLH conditions, use a pressure-demand self-contained breathing apparatus. Ensure local exhaust ventilation.

Exposure limits sourced from NIOSH Pocket Guide, OSHA 29 CFR 1910.1000 and ACGIH TLVs.

Appearance

Colorless to pale yellow liquid

Odor

Pungent, acrid (choking) odor

Odor Threshold

No data available

pH

< 1 at 20 °C

Melting Point / Freezing Point

-41.6 to -29.1 °C (-43 to -20 °F), freezing point (aqueous solution)

Boiling Point

119.3 to 120.5 °C (247 to 249 °F) (aqueous solution)

Flash Point

Not applicable

Evaporation Rate

No data available

Flammability (solid, gas)

No data available

Upper/Lower Flammability or Explosive Limits

No data available

Vapor Pressure

About 9.4 hPa (7 mmHg) at 20 °C

Vapor Density

2.2 (air = 1)

Relative Density

1.39 at 20 °C (water = 1)

Solubility

Miscible with water in all proportions (releases heat)

Partition Coefficient (n-octanol/water)

No data available

Auto-ignition Temperature

No data available

Decomposition Temperature

No data available

Viscosity

No data available

Particle Characteristics

Not applicable

Form

Liquid

Density

1.390 - 1.400

Values shown reflect product-specific canonical data. Lot-specific ranges may vary; see the Certificate of Analysis for the shipped lot.

Reactivity

Oxidizer: reacts with combustible and reducing materials, which may cause fire. May be corrosive to metals.

Chemical Stability

Stable under recommended storage conditions.

Possibility of Hazardous Reactions

None under normal processing conditions.

Conditions to Avoid

Heat and direct sunlight (decomposes and releases nitrogen dioxide), contact with combustible materials and metals.

Incompatible Materials

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.

Hazardous Decomposition Products

Nitrogen oxides, including nitrogen dioxide, and oxygen. Contact with metals releases hydrogen and nitrous gases.

See below for route-specific acute toxicity data.

Likely Routes of Exposure

Inhalation, skin contact, eye contact, ingestion.

Symptoms

• Causes burns to the skin, eyes and mucous membranes; eye contact may cause permanent damage including blindness; ingestion burns the mouth, throat and stomach.
• Inhalation may irritate the nose, throat and respiratory tract (coughing, sore throat).
• Inhalation may cause coughing, shortness of breath and headache; high concentrations may cause systemic poisoning.

Delayed and Chronic Effects

• No delayed or chronic effects identified beyond the classification in Section 2.

Carcinogen Classification

Ecotoxicity

Daphnia EC50: ~ 100 mg/L (48 h, Marine invertebrates — pH-driven; Carcinus maenas 180, Asterias rubens 100–300 mg/L); Fish LC50: ~ 100 mg/L (48 h, Agonus cataphractus — pH-driven; range 100–330 mg/L)

Persistence & Degradability

Not applicable (inorganic; dissociates to nitrate and hydronium ions)

Bioaccumulative Potential

log Kow −0.21

Mobility in Soil

High; mobile toward groundwater after partial neutralization

Dispose of contents/container in accordance with applicable federal, state, and local regulations. Do not dispose of into drains or waterways.

If discarded, this material may be an ignitable hazardous waste as an oxidizer (EPA RCRA D001, 40 CFR 261.21(a)(4)). If discarded, this material may be a corrosive hazardous waste (EPA RCRA D002, 40 CFR 261.22): aqueous with pH ≤ 2 or ≥ 12.5, or a liquid that corrodes steel at more than 6.35 mm per year. The waste generator must make the final hazardous-waste determination.

US DOT (49 CFR)

UN Number

UN2031

Proper Shipping Name

Nitric acid, other than red fuming, with at least 65 percent, but not more than 70 percent nitric acid

Hazard Class

8

Subsidiary Hazard Class

5.1

Packing Group

II

Additional US DOT Requirements

A package containing 1,000 lb or more of nitric acid (about 1,540 lb or 133 gal of 65% solution, for example a 275-gal tote) is a hazardous substance: UN2031, Nitric acid, other than red fuming, with at least 65 percent, but not more than 70 percent nitric acid, 8 (5.1), II, RQ (Nitric acid). Not a marine pollutant.

IMDG / IATA classifications may differ from US DOT. Verify current regulations before international shipment.

CERCLA Reportable Quantity (RQ)

Nitric acid (CAS 7697-37-2) 1,000 lb (454 kg). EPCRA Section 302 extremely hazardous substance, threshold planning quantity 1,000 lb.

SARA 311/312 hazard categories correspond to the GHS classification in Section 2. Data retrieved as of: California Proposition 65 2026-10-02; US EPA TSCA Active Inventory 2026-10-02; EPCRA SARA 313 (TRI) 2026-10-02.

Revision Date

2026-10-07

Format

16-section format per OSHA HCS 2024 (29 CFR 1910.1200, Appendix D), aligned with GHS Rev. 7.