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Cyclopentyl bromide

Cyclopentyl bromide structure

CAS No:
137-43-9
Formula:
C5H9Br
Chemical Name:
Cyclopentyl bromide
Synonyms:
Cyclopentane,bromo-;Bromocyclopentane;Cyclopentyl bromide;NSC 1110;2-Bromocyclopentane;4-Bromocyclopentane
Categories:
Organic Chemistry > Hydrocarbons and Derivatives

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Description

Colorless to yellow liquid

Cyclopentyl bromide Basic Attributes

Molecular Weight：

149.03

Exact Mass：

149.03

BRN：

1209256

EC Number：

205-294-6

NSC Number：

1110

DSSTox ID：

DTXSID9059670

HScode：

29035990

Characteristics

PSA：

XLogP3：

2.3

Appearance：

Clear yellow to light brown Liquid

Density：

1.38500122070313 g/cm³ @ Temp: 19 °C

Melting Point：

137-139ºC

Boiling Point：

137.5 °C

Flash Point：

95 °F

Refractive Index：

n 20/D 1.4881(lit.)

Water Solubility：

Immiscible with water.

Storage Conditions：

Store at R.T.

Vapor Pressure：

9.73mmHg at 25°C

Safety Information

Packing level：

III

Hazard category：

Transport codes：

UN 1993 3/PG 3

wgk germany：

hazard class code：

safety instructions：

23-24/25-16

Stability/Shelf Life：

Stable. Flammable. Incompatible with strong oxidizing agents, strong bases.

Precautionary statement(s)：

P210, P233, P240, P241, P242, P243, P280, P303+P361+P353, P370+P378, P403+P235, P501

Hazard Statements：

H226

GHS Classification：

|Warning|H226 (98.75%): Flammable liquid and vapor [Warning Flammable liquids]|P210, P233, P240, P241, P242, P243, P280, P303+P361+P353, P370+P378, P403+P235, and P501|Aggregated GHS information provided by 80 companies from 5 notifications to the ECHA C&L Inventory.

Cyclopentyl bromide Use and Manufacturing

Methods of Manufacturing

Derived from cyclopentanol bromination: cyclopentanol and hydrobromic acid are mixed and heated to about 170°C and refluxed for 6-8h. Then steam distillation, the oil layer was washed with 5% sodium carbonate, then dried, filtered, fractionated, collected 136-139 ℃ fraction is the finished product. Another method is to react cyclopentanol with phosphorus tribromide: cool the cyclopentanol to 0°C, add freshly steamed phosphorus tribromide dropwise, add at 0-5°C, stir for 2h, and place at room temperature overnight. After adding water, the layers are separated, and the oil layer is steam distilled. The distillate was separated into layers, and the oil layer was washed with 10% sodium bicarbonate solution, dried with anhydrous calcium chloride, filtered, and the filtrate was distilled, and the fraction of 134-141°C was collected to obtain bromocyclopentane.

Uses

Bromocyclopentane, also known as Cyclopentyl Bromide, is an alkyl halide and a light yellow or colorless liquid at standard pressure and temperature. Bromocyclopentane is a precursor used in the preparation of cyclopentene and cyclopentanol. It is a fatty bromide, which is used as a solvent. It can be used an intermediate for the preparation of surfactant and pharmaceuticals and other organic compounds.

Manufacturing Info：

Cyclopentane, bromo-: ACTIVE

Computed Properties

Molecular Weight:149.03
XLogP3:2.3
Exact Mass:147.98876
Monoisotopic Mass:147.98876
Heavy Atom Count:6
Complexity:37.2
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

Material

Cyclopentane

Downstream Products

Cyclopentane

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Raw chemical Bromocyclopentane CAS: 137-43-9 C5h9br Clear Colorless to Light Yellow Liquid

CAS No.: 137-43-9

Grade: Pharmaceutical Grade

Content: 99.5%

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Bromocyclopentane

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