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Nitric acid

Nitric acid structure

CAS No:
7697-37-2
Formula:
HNO3
Chemical Name:
Nitric acid
Synonyms:
Nitric acid;Aqua fortis;Azotic acid;Hydrogen nitrate;Nitryl hydroxide;Nital;Nitric acid (HONO2);Fumic acid;NSC 147791;NSC 15203;78989-43-2;218625-70-8;802862-59-5;807260-90-8;1053657-18-3;1173016-70-0;1316336-39-6;1431325-80-2;2108694-78-4;2195414-73-2

Description

Nitricacid,HN03, is a strong,fire-hazardous oxidant. It is a colorless or yellowish liquid that is miscible with water and boils at 86℃ (187 ℉). Nitric acid, also known as aqua fortis, is used for chemical synthesis, explosives, and fertilizer manufacture, and in metallurgy, etching, engraving, and ore flotation. Nitric acid is a colorless to light brown fuming liquid with an acrid, suffocating odor. Fuming nitric acid is a reddish fuming liquid. Fumes in moist air. Often used in an aqueous s

Nitric acid (HNO3), also known as aqua fortis and spirit of niter, is a highly corrosive mineral acid.

Nitric acid Basic Attributes

Molecular Weight：

63.01280

Exact Mass：

63.01

EC Number：

231-714-2

HScode：

2808000090

Characteristics

PSA：

66.05000

XLogP3：

0.17550

Appearance：

Nitric acid, red fuming appears as a pale yellow to reddish brown liquid generating red-brown fumes and having a suffocating odor. Very toxic by inhalation. Corrosive to metals or tissue. Prolonged exposure to low concentrations or short term exposure to high concentrations may result in adverse health effects. Rate of onset: Immediate Persistence: Hours - days Odor threshold: ~1 ppm Source/use/other hazard: Used in many industries; Very corrosive to skin/mucous membranes as well as metals & other materials.

Density：

1.55 g/cm³

Melting Point：

-41.6 °C

Boiling Point：

83 °C

Flash Point：

120.5ºC

Refractive Index：

1.409

Water Solubility：

H2O: >100 g/100 mL (20 ºC)

Storage Conditions：

2-8ºC

Vapor Pressure：

8 mm Hg ( 20 °C)

Vapor Density：

1 (vs air)

Toxicity：

LC50 inhal (rat) 2500 ppm (1 h) PEL (OSHA) 2 ppm (5 mg/m3) TLV-TWA (ACGIH) 2 ppm (5.2 mg/m3) STEL (ACGIH) 4 ppm (10 mg/m3)

Flammability characteristics：

Noncombustible Liquid, but increases the flammability of combustible materials.

Odor：

Characteristic choking odor

Taste：

1.1X10+3 N detection level in water. /Purity not specified/

Safety Information

Packing level：

Hazard category：

Transport codes：

UN 3264 8/PG 3

wgk germany：

hazard class code：

R8; R35

safety instructions：

S23-S26-S36-S45

RTECS Number：

QU5900000

Marks：

Storage features：

Separated from combustible substances, reducing agents, bases, organic chemicals and food and feedstuffs. Cool. Dry. Keep in a well-ventilated room. Store only in original container.

Precautionary statement(s)：

P210-P220-P260-P280-P305 + P351 + P338-P370 + P378

Hazard Statements：

H272-H290-H314

RIDADR：

UN 3264 8/PG 3

Caution Statement：

P210; P220; P280; P303 + P361 + P353; P304 + P340 + P310; P305 + P351 + P338

Nitric acid Use and Manufacturing

1. Nitric acid is an important starting material for the production of fertilizers and chemicals. Diluted nitric acid is used for dissolving and etching metals Product Data Sheet
2. Nitric acid is an important material for the production of explosives. Concentrated nitric acid, usually mixed with sulfuric acid (mixed acid), is used for nitrating organic compounds. Product Data Sheet

Computed Properties

Molecular Weight:63.013
XLogP3:0.2
Hydrogen Bond Donor Count:1
Hydrogen Bond Acceptor Count:3
Exact Mass:62.995642894
Monoisotopic Mass:62.995642894
Topological Polar Surface Area:66
Heavy Atom Count:4
Complexity:24.8
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

Synthesis Route

27096-30-6

7697-37-2

3352-57-6

13587-54-7

7697-37-2

14940-63-7

12033-49-7

612-29-3

7697-37-2

Material

Magnesium oxide

Hydrogen

Ammonia

Hydrogen peroxide

Oxygen

Methyl acetate

Downstream Products

Glycine

Price Analysis

Make your Nitric acid purchase based on the price and market insights! ECHEMI provides professional market insights with prices for you to make a better choice. Learn more on Nitric acid prices .

Data: 2026-07-24
Price: 1343.33Yuan/mt
Change: 0

Drug Function and Efficacy

Used in homeopathy for ulcerative conditions, particularly with offensive discharges, affecting mucous membranes, skin, and gastrointestinal tract.

This ingredient has been used in drugs with the following functions (note: it does not mean that the ingredient itself has the following health functions)

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