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1-Nitroso-2-naphthol

1-Nitroso-2-naphthol structure

CAS No:
131-91-9
Formula:
C10H7NO2
Chemical Name:
1-Nitroso-2-naphthol
Synonyms:
2-Naphthalenol,1-nitroso-;2-Naphthol,1-nitroso-;1-Nitroso-2-naphthalenol;α-Nitroso-β-naphthol;1-Nitroso-2-naphthol;1-Nitroso-2-hydroxynaphthalene;2-Hydroxy-1-nitrosonaphthalene;NSC 4151;NSC 677525
Categories:
Organic Chemistry > Hydrocarbons and Derivatives

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Description

brown powder

1-Nitroso-2-naphthol Basic Attributes

Molecular Weight：

173.17

Exact Mass：

173.17

BRN：

776947

EC Number：

205-043-0

UNII：

757I55U2QX

NSC Number：

677525|107835|4151

DSSTox ID：

DTXSID9059622

HScode：

29089000

Characteristics

PSA：

49.7

XLogP3：

2.3

Appearance：

tan to brown crystalline

Density：

1.2427 (rough estimate)

Melting Point：

109.5 °C

Boiling Point：

303.81°C (rough estimate)

Flash Point：

170.1±23.2 °C

Refractive Index：

1.5200 (estimate)

Water Solubility：

insoluble

Storage Conditions：

Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Vapor Pressure：

1.31E-05mmHg at 25°C

Toxicity：

LDLo orl-rat: 500 mg/kg NCNSA6 5,35,53

Safety Information

Packing level：

III

Hazard category：

Transport codes：

UN3077

wgk germany：

hazard class code：

22-36/37/38-33-20/21/22

safety instructions：

26-36-45

RTECS Number：

QL4725000

Marks：

Stability/Shelf Life：

Stable under normal temperatures and pressures.

Precautionary statement(s)：

P261-P305 + P351 + P338

Hazard Statements：

H302-H315-H319-H335

GHS Classification：

|Warning|H302 (95.65%): Harmful if swallowed [Warning Acute toxicity, oral]|P261, P264, P270, P271, P273, P280, P301+P312, P302+P352, P304+P340, P305+P351+P338, P312, P321, P330, P332+P313, P337+P313, P362, P391, P403+P233, P405, and P501|Aggregated GHS information provided by 46 companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Drug Information

MeSH Entry Terms：

1-nitroso-2-naphthol

1-Nitroso-2-naphthol Use and Manufacturing

Methods of Manufacturing

Derived from β-naphthol by nitrosation. Stir and dissolve β-naphthol and sodium hydroxide. After cooling, add sodium nitrite, filter, the filtrate is cooled to below 0 ℃, under stirring, the temperature does not exceed 0 ℃, continuously drop 10% hydrochloric acid until the Congo red test paper turns blue. After stirring for 0.5h, it is filtered, washed with water until the chloride ion is not greater than that in tap water, and then washed once with distilled water and ethanol, filtered out the crystal, and then refined to obtain the finished product.

Uses

Organic synthesis, prevention of gum formation in gasoline, dye intermediate, analytical reagent.

Manufacturing Info：

2-Naphthalenol, 1-nitroso-: ACTIVE

Computed Properties

Molecular Weight:173.17
XLogP3:2.3
Hydrogen Bond Donor Count:1
Hydrogen Bond Acceptor Count:3
Exact Mass:173.047678466
Monoisotopic Mass:173.047678466
Topological Polar Surface Area:49.7
Heavy Atom Count:13
Complexity:195
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

Material

2-Naphthol

Nitric acid

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