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Nitric acid

Nitric acid

Nitric acid

Nitric acid, available grades: 65–68% (Analytical Reagent, Guaranteed Reagent), Industrial ≥95%, High-Purity 68–70% (HPLC/electronic grades), 0.01–0.5 mol/L analytical standard. A Class 8 corrosive with subsidiary 5.1 hazard (UN 2031, PG II; above 70% UN 2032, PG I); strongly corrosive and oxidizing — severe burns/eye damage, toxic vapour, violent reaction with reducing agents, organic matter and metal powders. Used in fertiliser and nitrate manufacture, metal pickling and etching, precious-metal refining, nitration, electroplating and as digestion acid.

OEM supported. Custom purity & specifications available, please contact our manager.

Hazard Class:Class 8 (Corrosive; subsidiary 5.1)
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Specifications

CAS Number7697-37-2Molecular FormulaHNO3
Molecular Weight63.01AppearanceColourless to pale yellow fuming liquid with a pungent odour and strong corrosive action; common concentrations 65–68% (AR), 95% (industrial) and 68–70% (HPLC/electronic), miscible with water
HS Code2808.00UN Number2031
Density1.5 at 77 °F (NIOSH, 2024) - Denser than water; will sinkBoiling Point181 °F at 760 mmHg (NIOSH, 2024)
Melting Point-44 °F (NIOSH, 2024)Flash PointN/A
OriginChinaVapor Pressure48 mmHg (NIOSH, 2024)
SolubilityMiscible (NIOSH, 2024)Storage ConditionCool, dry, well-ventilated place, away from combustibles, reducing agents and acids
Packaging500 mL / 25 L / 200 L / 1 tShelf Life6-24 months
GradeAnalytical Reagent (AR) / Guaranteed Reagent (GR) / Industrial Grade / High-Purity Reagent / Analytical Standard 0.01–0.5 mol/L standard solutionsEINECS231-714-2
MDLMFCD00011349China Customs Code2808000000
GHS ClassificationDanger: H272; H290; H314Hazard ClassClass 8 (Corrosive; subsidiary 5.1)
CategoryExplosive PrecursorsUpdated2026-09-12

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Frequently asked questions about Nitric acid

What is Nitric acid? What is its CAS number?

Nitric acid is an industrial chemical raw material. Its CAS number is 7697-37-2. Its molecular formula is HNO3, with a molecular weight of 63.01. Typical appearance: Colourless to pale yellow fuming liquid with a pungent odour and strong corrosive action; common concentrations 65–68% (AR), 95% (industrial) and 68–70% (HPLC/electronic), miscible with water.

What are the synonyms and registry numbers of Nitric acid?

Nitric acid (CAS 7697-37-2) is listed under the following identifiers. EINECS number: 231-714-2. MDL number: MFCD00011349.

What documents are provided with Nitric acid (CAS 7697-37-2)?

A Certificate of Analysis (COA) is issued for each batch of Nitric acid. Standard purity grade: Analytical Grade. Safety Data Sheet (MSDS/SDS) and technical data sheet are available on request before ordering.

Is Nitric acid classified as dangerous goods? Which UN number applies?

Transport of Nitric acid (CAS 7697-37-2) is arranged according to its hazardous classification. UN number: 2031. GHS hazard statements: H272, H290, H314. We ship under IMDG (sea), IATA (air) or ADR (road) rules with compliant UN packaging; the final classification is confirmed against the batch test report.

What are the typical physical and chemical properties of Nitric acid?

Typical properties of Nitric acid (CAS 7697-37-2): appearance Colourless to pale yellow fuming liquid with a pungent odour and strong corrosive action; common concentrations 65–68% (AR), 95% (industrial) and 68–70% (HPLC/electronic), miscible with water; density 1.5 at 77 °F (NIOSH, 2024) - Denser than water; will sink; melting point -44 °F (NIOSH, 2024); boiling point 181 °F at 760 mmHg (NIOSH, 2024); vapor pressure 48 mmHg (NIOSH, 2024); solubility Miscible (NIOSH, 2024). These are reference values, not a batch specification.

What is the HS code for Nitric acid?

The HS code for Nitric acid (CAS 7697-37-2) is 2808.00. Customs classification may differ by destination country, so please confirm the final code with us before ordering.
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