1-Nitroso-2-naphthol

Modify Date: 2025-08-23 19:11:06

1-Nitroso-2-naphthol Structure
1-Nitroso-2-naphthol structure
 Common Name 1-Nitroso-2-naphthol
CAS Number 131-91-9 Molecular Weight 173.168
Density 1.3±0.1 g/cm3 Boiling Point 357.6±25.0 °C at 760 mmHg
Molecular Formula C10H7NO2 Melting Point 106-108 °C (dec.)(lit.)
MSDS Chinese USA Flash Point 170.1±23.2 °C
Symbol GHS07
GHS07		 Signal Word Warning

 Names

Name 1-Nitroso-2-naphthol
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.3±0.1 g/cm3
Boiling Point 357.6±25.0 °C at 760 mmHg
Melting Point 106-108 °C (dec.)(lit.)
Molecular Formula C10H7NO2
Molecular Weight 173.168
Flash Point 170.1±23.2 °C
Exact Mass 173.047684
PSA 49.66000
LogP 2.42
Vapour Pressure 0.0±0.8 mmHg at 25°C
Index of Refraction 1.630
InChIKey YXAOOTNFFAQIPZ-UHFFFAOYSA-N
SMILES O=Nc1c(O)ccc2ccccc12
Water Solubility insoluble

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
QL4725000
CHEMICAL NAME :
2-Naphthol, 1-nitroso-
CAS REGISTRY NUMBER :
131-91-9
BEILSTEIN REFERENCE NO. :
0776947
LAST UPDATED :
199710
DATA ITEMS CITED :
8
MOLECULAR FORMULA :
C10-H7-N-O2
MOLECULAR WEIGHT :
173.18
WISWESSER LINE NOTATION :
L66J BNO CQ

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
500 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Unreported
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
400 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value

MUTATION DATA

TYPE OF TEST :
DNA repair
TEST SYSTEM :
Bacteria - Bacillus subtilis
DOSE/DURATION :
10 mmol/L
REFERENCE :
JNSVA5 Journal of Nutritional Science and Vitaminology. (Business Center for Academic Soc. Japan, 2-4-16 Yayoi, Bunkyo-ku, Tokyo 113, Japan) V.19- 1973- Volume(issue)/page/year: 25,317,1979 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 82063 No. of Facilities: 75 (estimated) No. of Industries: 1 No. of Occupations: 2 No. of Employees: 1215 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 82063 No. of Facilities: 20 (estimated) No. of Industries: 1 No. of Occupations: 3 No. of Employees: 799 (estimated) No. of Female Employees: 655 (estimated)

 Safety Information

Symbol GHS07
GHS07
Signal Word Warning
Hazard Statements H302-H315-H319-H335
Precautionary Statements P261-P305 + P351 + P338
Personal Protective Equipment dust mask type N95 (US);Eyeshields;Gloves
Hazard Codes Xn:Harmful;
Risk Phrases R33
Safety Phrases S26-S36-S45
RIDADR UN3077
WGK Germany 3
RTECS QL4725000
Packaging Group III
Hazard Class 9
HS Code 29089000

 Customs

HS Code 2908999090
Summary 2908999090 halogenated, sulphonated, nitrated or nitrosated derivatives of phenols or phenol-alcohols。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0%

 Articles18

More Articles
Improved fluorometric determination of acetaminophen and its conjugates with 1-nitroso-2-naphthol in whole blood and urine.

Chem. Pharm. Bull. 30(1) , 358-61, (1982)

Determination of urinary homovanillic acid using the nitrosonaphthol reaction.

Am. J. Clin. Pathol. 87(5) , 644-8, (1987)

Determination of urinary homovanillic acid (HVA) is an important analysis to establish the diagnosis and prognosis of neuroblastoma. A method is presented for the determination of this metabolite of d...

Improved quantitation for urinary 5-hydroxyindole acetate using the nitrosonaphthol reaction.

Clin. Biochem. 17(1) , 37-8, (1984)

 Synonyms

Nitroso-2-Naphthol
Zelen moridlova 4
ortho-hydroxynitrosonaphthalene
1-NITROSO-2-NAPTHOL
1-Nitroso-2-naphthol
1-nitroso-2-naphtho
1-nitroso-2-hydroxy-naphthalene
1-Nitroso-2-naphthalenol
1-Nitroso-2-naftol
2-hydroxy-1-nitrosonaphthalene
Nitroso-β-naphthol
EINECS 205-043-0
2-Naphthalenol, 1-nitroso-
MFCD00003884
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Chemsrc provides 1-Nitroso-2-naphthol(CAS#:131-91-9) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Articles of 1-Nitroso-2-naphthol are included as well.>> amp version: 1-Nitroso-2-naphthol

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