Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Methyl (2E)-2-butenoate
Price: Check
Purity: 98.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Shanghai Jizhi Biochemical Technology Co., Ltd
China
Product Name: Methyl (2E)-2-butenoate
Price: ￥518.0/500ml ￥138.0/100ml
Purity: 98.0%
Stocking Period: 3 Day
Contact: Liu jia
Email: 2130147988@qq.com

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

623-43-8

623-43-8 structure

623-43-8 structure

Name: Methyl (2E)-2-butenoate
Chemical Name: trans-Methyl crotonate
CAS Number: 623-43-8
Molecular Formula: C₅H₈O₂
Molecular Weight: 100.116
Catalog: Chemical reagent Organic reagent Ester Methyl ester compound
Create Date: 2018-02-27 08:00:00
Modify Date: 2025-08-21 23:01:21

Name	trans-Methyl crotonate
Synonyms	Methyl-(2E)-but-2-enoat methyl-trans-3-triethylsilylacrylate methyl trans-crotonate Crotonic acid, methyl ester EINECS 210-793-7 Methyl (2E)-but-2-enoate Methyl Crotonate methyl-trans-4-oxo-2-pentoate E-1-triethylsilylpropensaeuremethylester 2-Butenoic acid, methyl ester crotonic acid methyl ester 2-Butenoic acid, methyl ester, (2E)- Methyl (2E)-2-butenoate Crotonic acid, methyl ester (8CI) MFCD00009287 3-methyl-acrylic acid,methyl ester

Density	0.9±0.1 g/cm3
Boiling Point	121.0±0.0 °C at 760 mmHg
Molecular Formula	C₅H₈O₂
Molecular Weight	100.116
Flash Point	4.4±0.0 °C
Exact Mass	100.052429
PSA	26.30000
LogP	1.32
Vapour Pressure	14.9±0.2 mmHg at 25°C
Index of Refraction	1.414
Water Solubility	IMMISCIBLE

CHEMICAL IDENTIFICATION

RTECS NUMBER :: GQ5710000

CHEMICAL NAME :: Crotonic acid, methyl ester, (E)-

CAS REGISTRY NUMBER :: 623-43-8

BEILSTEIN REFERENCE NO. :: 1720292

LAST UPDATED :: 199701

DATA ITEMS CITED :: 7

MOLECULAR FORMULA :: C5-H8-O2

MOLECULAR WEIGHT :: 100.13

WISWESSER LINE NOTATION :: 2U1VO1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: Standard Draize test

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Rodent - rabbit

REFERENCE :: FCTXAV Food and Cosmetics Toxicology. (London, UK) V.1-19, 1963-81. For publisher information, see FCTOD7. Volume(issue)/page/year: 17,865,1979 ** ACUTE TOXICITY DATA **

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

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: >3200 mg/kg

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

REFERENCE :: FCTXAV Food and Cosmetics Toxicology. (London, UK) V.1-19, 1963-81. For publisher information, see FCTOD7. Volume(issue)/page/year: 17,865,1979

TYPE OF TEST :: LC - Lethal concentration

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: >19000 ppm/6H

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

REFERENCE :: FCTXAV Food and Cosmetics Toxicology. (London, UK) V.1-19, 1963-81. For publisher information, see FCTOD7. Volume(issue)/page/year: 17,865,1979

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

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 1600 mg/kg

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

REFERENCE :: FCTXAV Food and Cosmetics Toxicology. (London, UK) V.1-19, 1963-81. For publisher information, see FCTOD7. Volume(issue)/page/year: 17,865,1979

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

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: >5 gm/kg

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

REFERENCE :: FCTXAV Food and Cosmetics Toxicology. (London, UK) V.1-19, 1963-81. For publisher information, see FCTOD7. Volume(issue)/page/year: 17,865,1979

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

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Rodent - guinea pig

DOSE/DURATION :: 10 mL/kg

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

REFERENCE :: FCTXAV Food and Cosmetics Toxicology. (London, UK) V.1-19, 1963-81. For publisher information, see FCTOD7. Volume(issue)/page/year: 17,865,1979

Symbol	GHS02, GHS07
Signal Word	Danger
Hazard Statements	H225-H315-H319-H335
Precautionary Statements	P210-P261-P305 + P351 + P338
Personal Protective Equipment	Eyeshields;Faceshields;full-face respirator (US);Gloves;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter
Hazard Codes	F:Flammable;Xi:Irritant;
Risk Phrases	R11;R36/37/38
Safety Phrases	S16-S26-S36-S33-S9
RIDADR	UN 3272 3/PG 2
WGK Germany	2
RTECS	GQ5710000
Packaging Group	II
Hazard Class	3.0
HS Code	29161980

Precursor 10
999-54-2 5469-24-9 35466-83-2 201230-82-2
67-56-1 107-93-7 36056-36-7 1117-71-1
123-73-9 616-42-2
DownStream 9
310431-29-9 3775-72-2 3775-73-3 38410-80-9
3780-42-5 3724-55-8 142835-68-5 14893-83-5
142060-21-7

HS Code	2916190090
Summary	2916190090 unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives。supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward)。VAT:17.0%。tax rebate rate:9.0%。MFN tariff:6.5%。general tariff:30.0%

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