nitric oxide

Modify Date: 2026-07-03 18:14:54

nitric oxide structure	Common Name	nitric oxide
	CAS Number	10102-43-9	Molecular Weight	30.00610
	Density	1.24 g/cmsup>3	Boiling Point	−151.7 °C(lit.)
	Molecular Formula	NO	Melting Point	−163.6 °C(lit.)
	MSDS	N/A	Flash Point	N/A

Summary: Nitric oxide, also known as mononitrogen oxide, CAS number 10102-43-9, has a molecular formula of NO and a molecular weight of 30.00610. It appears as a colorless gas, turning brown when exposed to air, with a melting point of -163.6 °C and a boiling point of -151.7 °C. For research-use only, not for medical or clinical usage.

This table lists Chinese names, IUPAC names and various aliases of this chemical substance.

Name	nitric oxide
Synonym	More Synonyms

This table shows physicochemical parameters including melting point, boiling point, density, solubility and optical rotation. Missing data is marked as N/A.

Density	1.24 g/cmsup>3
Boiling Point	−151.7 °C(lit.)
Melting Point	−163.6 °C(lit.)
Molecular Formula	NO
Molecular Weight	30.00610
Exact Mass	29.99800
PSA	17.07000
Vapour density	1.05 (vs air)
InChIKey	MWUXSHHQAYIFBG-UHFFFAOYSA-N
SMILES	[N]=O
Stability	Spontaneously reacts with oxygen in air to yield brown nitrogen dioxide. Reacts violently or explosively with ammonia and many organic materials.

This table provides MSDS information including hazard classification, first‑aid, fire‑fighting, spill handling, operation and storage instructions.

nitric oxide MSDS(Chinese)

This table summarizes toxicological test data, acute & chronic toxicity and ecological hazard parameters for this chemical.

CHEMICAL IDENTIFICATION

RTECS NUMBER :: QX0525000

CHEMICAL NAME :: Nitrogen monoxide

CAS REGISTRY NUMBER :: 10102-43-9

LAST UPDATED :: 199712

DATA ITEMS CITED :: 30

MOLECULAR FORMULA :: N-O

MOLECULAR WEIGHT :: 30.01

WISWESSER LINE NOTATION :: N O

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LC50 - Lethal concentration, 50 percent kill

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 1068 mg/m3/4H

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LCLo - Lowest published lethal concentration

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 320 ppm

TOXIC EFFECTS :: Behavioral - convulsions or effect on seizure threshold Lungs, Thorax, or Respiration - cyanosis Blood - methemoglobinemia-carboxyhemoglobin

TYPE OF TEST :: LCLo - Lowest published lethal concentration

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Mammal - dog

DOSE/DURATION :: 5000 ppm/25M

TOXIC EFFECTS :: Lungs, Thorax, or Respiration - acute pulmonary edema Blood - methemoglobinemia-carboxyhemoglobin

TYPE OF TEST :: TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 50 mg/m3/6H/7W-I

TOXIC EFFECTS :: Lungs, Thorax, or Respiration - changes in lung weight Liver - changes in liver weight Nutritional and Gross Metabolic - weight loss or decreased weight gain

TYPE OF TEST :: TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 3 mg/m3/24H/16D-C

TOXIC EFFECTS :: Brain and Coverings - recordings from specific areas of CNS Blood - methemoglobinemia-carboxyhemoglobin Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - true cholinesterase

TYPE OF TEST :: TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 10 ppm/2H/30W-I

TOXIC EFFECTS :: Lungs, Thorax, or Respiration - emphysema Blood - pigmented or nucleated red blood cells Blood - changes in leukocyte (WBC) count

TYPE OF TEST :: Mutation in mammalian somatic cells

MUTATION DATA

TYPE OF TEST :: Mutation in mammalian somatic cells

TEST SYSTEM :: Rodent - hamster Fibroblast

REFERENCE :: MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 136,119,1984 *** REVIEWS *** ACGIH TLV-TWA 31 mg/m3 (25 ppm) DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 TOXICOLOGY REVIEW CTOXAO Clinical Toxicology. (New York, NY) V.1-18, 1968-81. For publisher information, see JTCTDW. Volume(issue)/page/year: 7,145,1974 TOXICOLOGY REVIEW XPHBAO U.S. Public Health Service, Public Health Bulletin. (Washington, DC) Volume(issue)/page/year: 272,1,1941 *** U.S. STANDARDS AND REGULATIONS *** MSHA STANDARD-air:TWA 25 ppm (30 mg/m3) DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: 3,182,1971 OSHA PEL (Gen Indu):8H TWA 25 ppm (30 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1910.1000,1994 OSHA PEL (Construc):8H TWA 25 ppm (30 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1926.55,1994 OSHA PEL (Shipyard):8H TWA 25 ppm (30 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1915.1000,1993 OSHA PEL (Fed Cont):8H TWA 25 ppm (30 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 41,50-204.50,1994 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-THE NETHERLANDS:TWA 25 ppm (30 mg/m3) JAN 1993 OEL-THAILAND:TWA 25 ppm (30 mg/m3) JAN 1993 OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGIH TLV *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO NITRIC OXIDE-air:10H TWA 25 ppm REFERENCE : NIOSH* National Institute for Occupational Safety and Health, U.S. Dept. of Health, Education, and Welfare, Reports and Memoranda. Volume(issue)/page/year: DHHS #92-100,1992 NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 50745 No. of Facilities: 276 (estimated) No. of Industries: 11 No. of Occupations: 11 No. of Employees: 1354 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 50745 No. of Facilities: 59 (estimated) No. of Industries: 3 No. of Occupations: 16 No. of Employees: 14332 (estimated) No. of Female Employees: 6183 (estimated)

This table covers safety warnings, protective measures, incompatible substances and disposal guidelines for this compound.

Hazard Codes	O,T
Risk Phrases	R8
Safety Phrases	S17-S23-S36/37/39-S45
RIDADR	UN 1660 2.3
WGK Germany	1
RTECS	QX0525000
Hazard Class	2.3

This table lists upstream starting materials and downstream derivative products related to this chemical.

Precursor 0
DownStream 10
CAS#:7727-37-9 Nitrogen CAS#:7732-18-5 Water CAS#:7789-20-0 Heavy water CAS#:14940-63-7 deuterium hydro...
CAS#:14984-78-2 N,N-difluoronit... CAS#:1495-28-9 Dichlorofluoron... CAS#:2696-92-6 Nitrosyl chloride CAS#:75-73-0 Carbon tetrafluoride
CAS#:76-16-4 hexafluoroethane CAS#:334-99-6 trifluoronitros...

This table contains target information, in‑vitro & in‑vivo assay data for this compound.

Name: Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effec...
Source: ChEMBL
Target: Hepatotoxicity
External Id: CHEMBL1909317

Name: Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effec...
Source: ChEMBL
Target: Hepatotoxicity
External Id: CHEMBL1909316

Name: Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effec...
Source: ChEMBL
Target: Hepatotoxicity
External Id: CHEMBL1909319

Name: Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effec...
Source: ChEMBL
Target: Hepatotoxicity
External Id: CHEMBL1909318

Name: Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effec...
Source: ChEMBL
Target: Hepatotoxicity
External Id: CHEMBL1909320

Name: Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effec...
Source: ChEMBL
Target: Hepatotoxicity
External Id: CHEMBL1909309

Name: Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effec...
Source: ChEMBL
Target: Hepatotoxicity
External Id: CHEMBL1909308

Name: Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effec...
Source: ChEMBL
Target: Hepatotoxicity
External Id: CHEMBL1909311

Name: Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effec...
Source: ChEMBL
Target: Hepatotoxicity
External Id: CHEMBL1909310

Name: Drug Induced Liver Injury Prediction System (DILIps) training set; hepatic side effec...
Source: ChEMBL
Target: Hepatotoxicity
External Id: CHEMBL1909313

Total 15, Current Page 1 of 2

This table collects all English aliases, systematic names and CAS‑related synonyms of the compound.

oxido nitrico

MFCD00011525

NITRIC OXIDE

oxyde azotique

INOmax

oxoazanyl

Stickstoffmonoxid

Mononitrogen monoxide

EINECS 233-271-0

nitrosyl

nitrogen monooxide

Nitrosyl radical

This section contains frequently‑asked‑questions about this compound, including basic parameters, properties, storage conditions and corresponding answers.

Q: What is the English name of nitric oxide?

A: The English name of nitric oxide is nitric oxide.

Q: What is the molecular formula of nitric oxide?

A: Molecular formula of nitric oxide is NO.

Q: What English synonyms does nitric oxide have?

A: English synonyms of nitric oxide: oxido nitrico, MFCD00011525, NITRIC OXIDE, oxyde azotique, INOmax, oxoazanyl, Stickstoffmonoxid, Mononitrogen monoxide, EINECS 233-271-0, nitrosyl, nitrogen monooxide, Nitrosyl radical.

Q: What is the safety information for nitric oxide?

A: Safety information for nitric oxide: S17-S23-S36/37/39-S45.

Q: What is the melting point of nitric oxide?

A: Melting point of nitric oxide is −163.6 °C(lit.).

Q: What is the molecular weight of nitric oxide?

A: Molecular weight of nitric oxide is 30.00610.

Q: What are the downstream products of nitric oxide?

A: Related downstream products(CAS) of nitric oxide: 7727-37-9;7732-18-5;7789-20-0;14940-63-7;14984-78-2;1495-28-9;2696-92-6;75-73-0;76-16-4;334-99-6.

Q: What is the boiling point of nitric oxide?

A: Boiling point of nitric oxide is −151.7 °C(lit.).

Q: What is the CAS number of nitric oxide?

A: CAS number of nitric oxide is 10102-43-9.

Q: What is the polar surface area (PSA) of nitric oxide?

A: Polar surface area (PSA) of nitric oxide is 17.07000.

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nitric oxide

Names

Chemical & Physical Properties

MSDS

Toxicological Information

CHEMICAL IDENTIFICATION

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

MUTATION DATA

Safety Information

Precursor & DownStream

nitric oxideBioassay

Synonyms

nitric oxide | FAQ

The content on this webpage is sourced from various professional data sources. If you have any questions or concerns regarding the content, please feel free to contact service1@chemsrc.com.