Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Palmitic acid
Price: Check
Purity: 98.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 2,5-Thiophenedicarboxylic acid
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

Henan Tianfu Chemical Co., Ltd.
China
Product Name: 2,5-Thiophenedicarboxylic acid
Price: $Inquiry/1kg $Inquiry/25kg $Inquiry/1000kg $Inquiry/10ton
Purity: 99.0%
Stocking Period: Inquiry
Contact: Anson
Email: info@tianfuchem.com

4282-31-9

4282-31-9 structure

4282-31-9 structure

Name: Thiophene-2,5-dicarboxylic acid
Chemical Name: 2,5-Thiophenedicarboxylic acid
CAS Number: 4282-31-9
Molecular Formula: C₆H₄O₄S
Molecular Weight: 172.159
Catalog: Catalysts and additives Fluorescent whitening agent
Create Date: 2018-08-07 10:33:09
Modify Date: 2026-07-11 08:37:46

Name	2,5-Thiophenedicarboxylic acid
Synonyms	RECHEM AL BE 0623 2,5-THIOPHENEDICBOXYLIC 2,5-DICBOXYTHIOPHENE 2,5-Thiophenedicbo Thiophene-2,5-Dicboxyl Acid 2,5-Thiophenedicboxylic acid 5-carboxythiophene-2-carboxylic acid TH-2COOH Thiophene-2,5-dicboxylicacid 2,5-Thiophene dicarboxylic acid Thiophene-,'-dicarboxylic acid Thiophene -2,5- twocboxylic acid thiophene-2,5-dicarboxylic acid thiophene-2,5-dicboxylate RARECHEM AL BE 0623 OTAVA-BB BB7013911425 MFCD00016896 Thiophene-,'-dicboxylic acid 2,5-dicboxylic acid thiophene OB acid THIOPHENE-2,5-DICBOXYLIC ACID 2,5-Thiophenedicarbo 2,5-Thiophenedicboxylic acid ISO 9001：2015 REACH 2,5-THIOPHENEDICARBOXYLIC 2,5-Thiophenedicboxylic Acid (OB Acid) Thiophene-2,5-Dicarboxyl Acid 2,5-DICARBOXYTHIOPHENE EINECS 224-284-2

Density	1.7±0.1 g/cm3
Boiling Point	444.6±30.0 °C at 760 mmHg
Melting Point	>300 °C(lit.)
Molecular Formula	C₆H₄O₄S
Molecular Weight	172.159
Flash Point	222.7±24.6 °C
Exact Mass	171.983032
PSA	102.84000
LogP	1.34
Vapour Pressure	0.0±1.1 mmHg at 25°C
Index of Refraction	1.663

Symbol	GHS07
Signal Word	Warning
Hazard Statements	H315-H319-H335
Precautionary Statements	P261-P305 + P351 + P338
Personal Protective Equipment	dust mask type N95 (US);Eyeshields;Gloves
Hazard Codes	Xi:Irritant
Risk Phrases	R36/37/38
Safety Phrases	S26-S36-S37/39
RIDADR	NONH for all modes of transport
WGK Germany	3
HS Code	2934999090

Precursor 9
625-88-7 3141-27-3 201230-82-2 67-56-1
28569-48-4 188290-36-0 18853-40-2 13679-74-8
124-38-9
DownStream 10
50340-79-9 86093-76-7 2866-43-5 7128-64-5
1000342-25-5 112889-02-8 128009-32-5 87721-33-3
112887-68-0 132463-02-6

HS Code	2934999090
Summary	2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

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