Shanghai Nianxing Industrial Co., Ltd
China
Product Name: 2-Butenoic acid,2,3-dibromo-4-oxo-
Price: Check
Purity: 98.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 2-Butenoic acid,2,3-dibromo-4-oxo-
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

21577-50-4

21577-50-4 structure

21577-50-4 structure

Name: 2-Butenoic acid,2,3-dibromo-4-oxo-
Chemical Name: 2,3-dibromo-4-oxobut-2-enoic acid
CAS Number: 21577-50-4
Molecular Formula: C₄H₂Br₂O₃
Molecular Weight: 257.86500
Create Date: 2019-01-01 13:07:57
Modify Date: 2025-09-19 16:11:04

Name	2,3-dibromo-4-oxobut-2-enoic acid
Synonyms	2,3-dibromo-4-oxo-but-2-enoic acid Dibrommaleinaldehydsaeure 2,3-dibromo-4-oxo-crotonic acid 2,3-Dibrom-4-oxo-crotonsaeure 2,3-Dibromo-4-Oxo-2-Butenoic Acid 2,3-Dibromo-4-oxobut-2-enoic acid 2,3-dibromomalealdehydic acid

Density	2.43g/cm3
Boiling Point	321.8ºC at 760mmHg
Molecular Formula	C₄H₂Br₂O₃
Molecular Weight	257.86500
Flash Point	148.4ºC
Exact Mass	255.83700
PSA	54.37000
LogP	1.27130
Vapour Pressure	5.99E-05mmHg at 25°C
Index of Refraction	1.625

HS Code	2918300090

Precursor 9
98-01-1 88-14-2 7732-18-5 7726-95-6
3439-02-9 32460-04-1 7697-37-2 149418-41-7
21285-46-1
DownStream 10
5788-58-9 141-82-2 64-18-6 593-61-3
124-38-9 594-73-0 608-37-7 75-95-6
64224-60-8 10035-10-6

HS Code	2918300090
Summary	2918300090 other carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0%

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