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1-Bromonaphthalene

1-Bromonaphthalene structure

CAS No:
90-11-9
Formula:
C10H7Br
Chemical Name:
1-Bromonaphthalene
Synonyms:
1-bromo-naphthalen;1-Naphthyl bromide;A-BROMONAPHTHALENE;ALPHA-BROMONAPHTHALENE;ALPHA-MONOBROMONAPHTHALENE;ALPHA-NAPHTHYL BROMIDE;1-BROMONAPHTHALENE;1-BROMO NAPTHALENE
Categories:
Organic Chemistry > Hydrocarbons and Derivatives

Description

clear yellow to yellow-brown liquid

Thick colorless yellow to yellow-brown liquid with a pungent odor. Insoluble in water, miscible with alcohol, ether, benzene and chloroform. 1-Bromonaphthalene is one of two isomeric bromonaphthalenes, the other being 2-bromonaphthalene.

The vibrational spectra of 1-bromonaphthalene has been studied.

Purify 1-bromonaphthalene by passage through activated alumina, and three vacuum distillations. [Beilstein 5 H 547, 5 IV 1665.]

1-Bromonaphthalene Basic Attributes

Molecular Weight：

207.07

Exact Mass：

207.07

BRN：

1906414

EC Number：

201-965-2

UNII：

976Y53P08P

NSC Number：

6551

TSCA：

TSCA listed

Color/Form：

slightly yellow to deep brownish-yellow

HScode：

29036990

Characteristics

PSA：

XLogP3：

4.3

Appearance：

slightly yellow to deep brownish-yellow Liquid

Density：

1.48 g/mL at 20 °C(lit.)

Melting Point：

−2-−1 °C(lit.)

Boiling Point：

133-134 °C10 mm Hg(lit.)

Flash Point：

>230 °F

Refractive Index：

n20/D1.6570(lit.)

Water Solubility：

slightly soluble

Storage Conditions：

Store below +30°C.

Vapor Pressure：

0.013 hPa (20 °C)

Toxicity：

LD50 orally in Rabbit: 810 mg/kg

Flammability characteristics：

Flammable; burning produces toxic bromide gas

Henrys Law Constant：

3.5×10-2mol/(m3Pa) at 25℃, Duchowicz et al. (2020)

Critical Temperature & Pressure：

Store below +30°C.

Safety Information

Packing level：

III

Hazard category：

6.1(b)

Transport codes：

2810

wgk germany：

hazard class code：

Xn,Xi

safety instructions：

26-36

RTECS Number：

QJ1545000

Marks：

Xn,Xi

Storage features：

Warehouse ventilated, low temperature and dry

Precautionary statement(s)：

P305 + P351 + P338

Hazard Statements：

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

RIDADR：

2810

GHS Classification：

|Warning|H302 (98.08%): Harmful if swallowed [Warning Acute toxicity, oral]|P264, P270, P280, P301+P312, P305+P351+P338, P330, P337+P313, and P501|Aggregated GHS information provided by 52 companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Toxicity

Toxicity class：

moderately toxic

Drug Information

MeSH Entry Terms：

alpha-bromonaphthalene

1-Bromonaphthalene Use and Manufacturing

Methods of Manufacturing

Derived from the reaction of naphthalene and bromine. Add carbon tetrachloride and naphthalene into the reaction pot, stir and heat, and slowly add bromine at 45°C. After the addition, the reaction was kept at 70-80°C for 3-4h. The carbon tetrachloride is recovered by distillation, and the reactant is washed, distilled under reduced pressure, washed again, filtered, and dried to obtain the finished product.

Uses

Biochemical research

1-Bromonaphthalene is used in organic synthesis and refractometry of fats. It is used in the preparation of N-aryl imidazoles and diaryl ethers. It is used to determine the refractive index of crystals and the water content of alcohols. It is utilized in the preparation of glutathione peroxidase-like antioxidant activity of diaryl diselenides. Further, it serves as a solvent for the exfoliation and dispersion of hexabenzocoronene. In addition to this, it is used as a refrigerant and a solvent molecular weight substance.

Manufacturing Info：

Naphthalene, 1-bromo-: ACTIVE

Computed Properties

Molecular Weight:207.07
XLogP3:4.3
Exact Mass:205.97311
Monoisotopic Mass:205.97311
Heavy Atom Count:11
Complexity:133
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

Material

1-Naphthylamine

Carbon tetrachloride

Naphthalene

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