MeSH Browser

MeSH Heading: Nitrous Acid
Tree Number(s): D01.029.260.575; D01.625.600
Unique ID: D009608
RDF Unique Identifier: http://id.nlm.nih.gov/mesh/D009608
Annotation: do not confuse with NITRIC ACID
Scope Note: Nitrous acid (HNO2). A weak acid that exists only in solution. It can form water-soluble nitrites and stable esters. (From Merck Index, 11th ed)
Related Numbers: 7782-77-6
CAS Type 1 Name: Nitrous acid
Public MeSH Note: 91; was see under NITRITES 1975-90
Online Note: search NITRITES 1966-74
History Note: 91(75); was see under NITRITES 1975-90
Date Established: 1991/01/01
Date of Entry: 1999/01/01
Revision Date: 2013/07/08

Allowable Qualifiers: administration & dosage (AD)

adverse effects (AE)

agonists (AG)

analysis (AN)

antagonists & inhibitors (AI)

blood (BL)

cerebrospinal fluid (CF)

chemical synthesis (CS)

chemistry (CH)

classification (CL)

economics (EC)

history (HI)

immunology (IM)

isolation & purification (IP)

metabolism (ME)

pharmacokinetics (PK)

pharmacology (PD)

poisoning (PO)

radiation effects (RE)

standards (ST)

supply & distribution (SD)

therapeutic use (TU)

toxicity (TO)

urine (UR)

Nitrous Acid MeSH Descriptor Data 2025