Skip Navigation
ChemIDplus Lite•Browse•Advanced

Substance Name: Nitric acid [NF]
RN: 7697-37-2
UNII: 411VRN1TV4
InChIKey: GRYLNZFGIOXLOG-UHFFFAOYSA-N

Note

  • Nitric acid (HNO3). A colorless liquid that is used in the manufacture of inorganic and organic nitrates and nitro compounds for fertilizers, dye intermediates, explosives, and many different organic chemicals. Continued exposure to vapor may cause chronic bronchitis; chemical pneumonitis may occur. (From Merck Index, 11th ed).

Molecular Formula

  • H-N-O3

Molecular Weight

  • 63.0119
 

Classification Codes

Classification Codes

  • Explosive Agents
  • Human Data
  • Mutation Data
  • Pharmaceutic Aid (Acidifying Agent)
  • Reproductive Effect

Superlist Classification Codes

  • Reportable Quantity (RQ) = 1000 lb
  • Threshold Planning Quantity (TPQ) = 1000 lb
  • TWA (2 ppm); STEL (4 ppm)
  • TWA 2 ppm (5 mg/m3)

Names and Synonyms

Name of Substance

  • Nitric acid
  • Nitric acid [NF]
  • Nitric acid, anhydrous

MeSH Heading

  • Nitric acid

Synonyms

  • Acide nitrique
  • Acide nitrique [French]
  • Acido nitrico
  • Acido nitrico [Italian]
  • Acido nitrico [Spanish]
  • Acidum nitricum
  • Aqua fortis
  • Azotic acid
  • Azotowy kwas
  • Azotowy kwas [Polish]
  • EC 231-714-2
  • EINECS 231-714-2
  • Engraver's acid
  • HSDB 1665
  • Hydrogen nitrate
  • Kyselina dusicne
  • Kyselina dusicne [Czech]
  • Nital
  • Nitric acid
  • Nitricum acidum
  • Nitrous fumes
  • Nitryl hydroxide
  • Red fuming nitric acid
  • RFNA
  • Salpetersaeure
  • Salpetersaure
  • Salpetersaure [German]
  • Salpeterzuuroplossingen
  • Salpeterzuuroplossingen [Dutch]
  • UNII-411VRN1TV4

Systematic Names

  • Nitric acid
  • Nitric acid (red fuming)

Superlist Names

  • Nitric acid
  • Nitric acid (70% or less)
  • Nitric acid (conc 80% or greater)
  • Nitric acid (greater than 70%)
  • Nitric acid (HNO3) 94.5% by weight or more HNO3
  • Nitric acid other than red fuming with >70% nitric acid
  • Nitric acid other than red fuming with >70% nitric acid [UN2031] [Corrosive]
  • Nitric acid other than red fuming with not >70% nitric acid
  • Nitric acid other than red fuming with not >70% nitric acid [UN2031] [Corrosive]
  • Nitric acid, red fuming
  • Nitric acid, red fuming [UN2032] [Corrosive]
  • UN2031
  • UN2032

Registry Numbers

CAS Registry Number

  • 7697-37-2

FDA UNII

  • 411VRN1TV4

Other Registry Numbers

  • 1053657-18-3
  • 1173016-70-0
  • 1316336-39-6
  • 1431325-80-2
  • 2108694-78-4
  • 218625-70-8
  • 2195414-73-2
  • 78989-43-2
  • 802862-59-5
  • 807260-90-8

System Generated Number

  • 0007697372

Structure Descriptors

InChI

InChI=1S/HNO3/c2-1(3)4/h(H,2,3,4)

InChIKey

GRYLNZFGIOXLOG-UHFFFAOYSA-N

Smiles

O[N+](=O)[O-]

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
human LDLo oral 430mg/kg (430mg/kg)   Gekkan Yakuji. Pharmaceuticals Monthly. Vol. 22, Pg. 651, 1980.
man LDLo unreported 110mg/kg (110mg/kg)   "Poisoning; Toxicology, Symptoms, Treatments," 2nd ed., Arena, J.M., Springfield, IL, C.C. Thomas, 1970Vol. 2, Pg. 73, 1970.
rat LC50 inhalation 67ppm(NO2)/4H (67ppm)   AMA Archives of Industrial Hygiene and Occupational Medicine. Vol. 10, Pg. 418, 1954.