14282-56-5

14282-56-5 - Names and Identifiers

Name	3,4-Dihydroxythiophene-2,5-dicarboxylic acid diethyl ester, disodium salt
Synonyms	3,4-Dihydroxy-Thiophene-2,5-dicarboxylic acid disodium,2,5-bis(ethoxycarbonyl)thiophene-3,4-diolate Sodium 2,5-bis(ethoxycarbonyl)-thiophene-3,4-bis(olate) (2Z,5Z)-2,5-bis[ethoxy(hydroxy)methylidene]thiolane-3,4-dione 2,5-Thiophenedicarboxylic Acid Dicarboxy Diethyl Ester Disodium 3,4-Dihydroxythiophene-2,5-dicarboxylic acid diethyl ester disod (2Z,5Z)-2,5-bis[ethoxy(hydroxy)methylidene]Thiophene-3,4(2H,5H)-dione 3,4-Dihydroxythiophene-2,5-dicarboxylic acid diethyl ester, disodium salt 3,4-Dihydroxy-2,5-thiophenedicarboxylic acid 2,5-diethyl ester sodium salt 2,5-Thiophenedicarboxylic acid, 3,4-Dihydroxy-, 2,5-diethyl ester, sodium salt
CAS	14282-56-5
InChI	InChI=1/C10H12O6S/c1-3-15-9(13)7-5(11)6(12)8(17-7)10(14)16-4-2/h13-14H,3-4H2,1-2H3/b9-7-,10-8-

14282-56-5 - Physico-chemical Properties

Molecular Formula	C10H10Na2O6S
Molar Mass	304.22734
Density	1.507g/cm³
Melting Point	320-325°C(lit.)
Boling Point	343.8°C at 760 mmHg
Flash Point	161.7°C
Vapor Presure	4.41E-06mmHg at 25°C
Storage Condition	Room Temprature
Refractive Index	1.616
Physical and Chemical Properties	WGK Germany:3

14282-56-5 - Risk and Safety

Hazard Symbols	Xi - Irritant
Risk Codes	36/37/38 - Irritating to eyes, respiratory system and skin.
Safety Description	S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing.
WGK Germany	3

14282-56-5 - Introduction

2,5-Diethyl 3,4-dihydroxy -2,5-thiophenedicarboxylic acid sodium salt, also known as DEH, is an organic compound. The following is a description of its nature, use, preparation and safety information:

Nature:
- DEH is a solid crystal, white or yellowish.
-It is soluble in water at room temperature, and has a certain solubility in organic solvents.
- DEH has a neutral pH value, is not volatile, and has good stability.

Use:
- DEH is often used as a crosslinking agent in organic chemical synthesis and plays an important role in the preparation of polymers and coatings.
-Its use in polyester resins and coatings can enhance the heat resistance, corrosion resistance and mechanical strength of the material.
- DEH can also be used as a stabilizer and protective agent for certain chemicals and materials.

Preparation Method:
The preparation of-DEH is usually carried out by esterification reaction and hydroxylation reaction.
-First, 2,5-diethyl 3,4-dihydroxy -2,5-thiophene and sodium formate are reacted under appropriate reaction conditions to generate 2,5-diethyl 3,4-dihydroxy -2,5-thiophene dicarboxylic acid.
-Then, the generated dicarboxylic acid is reacted with a base (such as sodium hydroxide) to form 2,5-diethyl 3,4-dihydroxy -2,5-thiophene dicarboxylic acid sodium salt.

Safety Information:
- DEH should be handled and stored using appropriate personal protective measures, such as gloves, goggles and laboratory coats.
-Follow laboratory safety practices when using DEH and ensure that adequate ventilation is provided.
-Avoid contact with skin, eyes and mucous membranes, such as accidental contact, should immediately rinse with water.
- DEH is a chemical and should be stored in a closed container, away from fire and flammable materials.
-If DEH is ingested or inhaled, seek medical attention immediately and show the Chemical Safety Data Sheet.

Last Update：2024-04-09 21:01:54