Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Palmitic acid
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Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: (E)-1,4-Dibromobut-2-ene
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Henan Tianfu Chemical Co., Ltd.
China
Product Name: TIANFUCHEM--821-06-7---(E)-1,4-Dibromobut-2-ene
Price: $Inquiry/1kg $Inquiry/25kg $Inquiry/1000kg $Inquiry/10ton
Purity: 99.0%
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Contact: Anson
Email: info@tianfuchem.com

821-06-7

821-06-7 structure

821-06-7 structure

Name: (2E)-1,4-Dibromo-2-butene
Chemical Name: trans-1,4-Dibromo-2-butene
CAS Number: 821-06-7
Molecular Formula: C₄H₆Br₂
Molecular Weight: 213.898
Catalog: Organic raw materials Hydrocarbon compounds and their derivatives Hydrocarbon halide
Create Date: 2018-04-18 08:00:00
Modify Date: 2026-07-01 11:03:48

Name	trans-1,4-Dibromo-2-butene
Synonyms	4-DibroMo-2-butene 2-Butene, 1,4-dibromo-, trans (2E)-1,4-dibromobut-2-ene 1,4-dibroMo-2-butene (trans) 4-dibromo-trans-2-buten 1,4-trans-Dibromobutene-2 Tran-1,4-Dibromo-2-Butylene trans-1,4-Dibrombut-2-en 1,4-dibromo-, trans MFCD07783464 (E)-1,4-Dibromobut-2 trans-1,4-DibroMo-2-butene, R trans-1,4-Dibromo-2-butene> 4-dibromo-(e)-2-buten (E)-1,4-Dibromobut-2-ene ISO 9001：2015 REACH Dibromobutene 2-Butene, 1,4-dibromo-, (2E) (2E)-1,4-Dibromo-2-butene 1 (E)-1,4-dibromobut-2-ene EINECS 212-472-7 1,4-Dibromo-(E)-2-butene 1,4-Dibromo-1-butene TIANFUCHEM--7--(E)-1,4-Dibromobut-2-ene 1,4-Dibromo-2-Butene Trans1butene4-dibroMo -2 1,4-DIBROMO-2-BUTENE PREDOMINANTLY TRANS 1,4-Dibromo-2-butene, E 1,4-Dibromo-trans-2-butene (E)-1,4-Dibromo-2-butene (E)-1,4-Dibromobut-2-ene 1,4-DIBROMO-2-PENTENE 4-dibromo- trans-2-butene trans-1,4-DibroMo-2-butene (2E)-1,4-Dibromobut-2-ene

Density	1.9±0.1 g/cm3
Boiling Point	203.0±0.0 °C at 760 mmHg
Melting Point	48-53ºC
Molecular Formula	C₄H₆Br₂
Molecular Weight	213.898
Flash Point	71.9±21.0 °C
Exact Mass	211.883606
LogP	2.41
Vapour Pressure	0.4±0.3 mmHg at 25°C
Index of Refraction	1.543
Storage condition	Refrigerator
Water Solubility	slightly soluble

CHEMICAL IDENTIFICATION

RTECS NUMBER :: EM4725000

CHEMICAL NAME :: 2-Butene, 1,4-dibromo-, trans-

CAS REGISTRY NUMBER :: 821-06-7

BEILSTEIN REFERENCE NO. :: 1719696

LAST UPDATED :: 199701

DATA ITEMS CITED :: 4

MOLECULAR FORMULA :: C4-H6-Br2

MOLECULAR WEIGHT :: 213.92

WISWESSER LINE NOTATION :: E2U2E -T

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: Standard Draize test

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Rodent - rabbit

REFERENCE :: SCCUR* Shell Chemical Company. Unpublished Report. (2401 Crow Canyon Rd., San Romon, CA 94583) Volume(issue)/page/year: -,3,1961 ** ACUTE TOXICITY DATA **

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 62 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: SCCUR* Shell Chemical Company. Unpublished Report. (2401 Crow Canyon Rd., San Romon, CA 94583) Volume(issue)/page/year: -,9,1961

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 29 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: SCCUR* Shell Chemical Company. Unpublished Report. (2401 Crow Canyon Rd., San Romon, CA 94583) Volume(issue)/page/year: -,9,1961

Symbol	GHS05, GHS06
Signal Word	Danger
Hazard Statements	H301-H314
Precautionary Statements	P280-P301 + P310-P305 + P351 + P338-P310
Personal Protective Equipment	Eyeshields;Faceshields;full-face particle respirator type N100 (US);Gloves;respirator cartridge type N100 (US);type P1 (EN143) respirator filter;type P3 (EN 143) respirator cartridges
Hazard Codes	T:Toxic
Risk Phrases	R23/25;R34
Safety Phrases	S26-S28-S36/37/39-S45
RIDADR	UN 2923
WGK Germany	2
RTECS	EM4725000
Packaging Group	III
Hazard Class	6.1(b)
HS Code	2903399090

Precursor 10
106-99-0 344397-18-8 78-76-2 6081-86-3
10463-48-6 821-11-4 110-86-1 124-18-5
67-66-3 7726-95-6
DownStream 10
1112-96-5 105-17-9 497-06-3 821-11-4
18085-02-4 18189-24-7 624-64-6 689-97-4
89567-73-7 110-54-3

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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