Shanghai Nianxing Industrial Co., Ltd
China
Product Name: 4-Bromo-1-butyne
Price: Check
Purity: 97.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Shanghai Jizhi Biochemical Technology Co., Ltd
China
Product Name: 4-Bromo-1-butyne
Price: ￥638.0/5g ￥228.0/1g
Purity: 97.0%
Stocking Period: Inquiry
Contact: Liu jia
Email: 2130147988@qq.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 4-Bromo-1-butyne
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

38771-21-0

38771-21-0 structure

38771-21-0 structure

Name: 4-Bromo-1-butyne
Chemical Name: 4-bromobut-1-yne
CAS Number: 38771-21-0
Molecular Formula: C₄H₅Br
Molecular Weight: 132.986
Create Date: 2018-09-18 11:18:48
Modify Date: 2025-08-25 20:04:38

Name	4-bromobut-1-yne
Synonyms	1-Bromo-3-butyne 4-bromo-butyne 1-Butyne, 4-bromo- 4-Bromo-1-butyne 1-Butyne,4-bromo 3-Butynyl Bromide 4-Bromobut-1-yne 1-bromo-3-butynol 4-bromo-but-1-yne homopropargyl bromide

Density	1.5±0.1 g/cm3
Boiling Point	118.3±23.0 °C at 760 mmHg
Molecular Formula	C₄H₅Br
Molecular Weight	132.986
Flash Point	32.3±17.0 °C
Exact Mass	131.957458
LogP	1.72
Vapour Pressure	20.0±0.2 mmHg at 25°C
Index of Refraction	1.483
Storage condition	2~8℃

Hazard Codes	T: Toxic;
Risk Phrases	R10;R25;R43
Safety Phrases	S36/37-S45
RIDADR	2811.0
HS Code	2903399090

Precursor 2
927-74-2 23418-85-1
DownStream 7
10575-06-1 51049-14-0 5162-44-7 19596-07-7
92144-00-8 942518-21-0 43001-25-8

HS Code	2903399090
Summary	2903399090. brominated,fluorinated or iodinated derivatives of acyclic hydrocarbons. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:5.5%. General tariff:30.0%

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