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Multivalent mercaptan – Asahi Chemical Co. Ltd.

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Polyvalent mercaptans are characterized by their ability to contribute to photo-curing and thermo-curing reactions.

Using this feature, it is anticipated that they will find applications in highly refractive resins, coating materials, adhesives, paints, etc.
In addition, mercaptans are widely used as chain transfer agents in radical polymerization, curing agents for epoxy resins, cleaning agents for electronic parts, and thin copper film manufacturing. It is expected that they will become even more sophisticated, with more applications in the future.

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Description

  1. G-2S(A) CAS No. 584-04-3
  2. PE-2S CAS No. 19333-66-5
  3. PE-3S CAS No. 500283-12-5
  4. PE-4S CAS No. 4720-60-9
  5. TMP-3S CAS No. 121318-18-1

In addition to having 2 to 4 mercapto groups, these have various other characteristics, such as having 1 or 2 hydroxyl groups (① to ③) and having a significantly high sulfur content (①52%, ③52%, ④64%, ⑤53%) … and there are many others. Therefore, such qualities are anticipated to modify the substance’s character by enhancing the hydroxyl group: high refractive index, high heat resistance, transparency, and flexibility.
These are all 97% or more pure.
They have little or no odor.
①, ③ are liquids, ②, ④, ⑤ are solids.
Both are stored in a nitrogen atmosphere.
Solubility varies depending on the compound, but it is usually slightly soluble or difficult to dissolve in water, is soluble in ether, and easily soluble in alcohol, toluene, and hexane.

Compound namePropertySolubility information
G-2S(A)
1,3-Dimercapto-2-propanol
Transparent colorless to pale yellow liquid
Refractive index 1.566		Heptane× Insoluble
Toluene◎
Ethyl acetate◎
Ethyl cellosolve◎
Methanol◎
Water×5% Dissolves
PE-2S
2,2-Bis(mercaptomethyl)-1,3-propanediol
White solid
Melting point 95 ˚C		Heptane×
Toluene×
Ethyl acetate△
Ethyl cellosolve○
Methanol○
Water×
PE-3S
3-mercapto-2,2-bis(mercaptomethyl)-1-propanol
Colorless to slightly yellow solid
Melting point 35 ˚C		Heptane×
Toluene◎
Ethyl acetate◎
Ethyl cellosolve△
Methanol◎
Water×
PE-4S
2,2-Bis(mercaptomethyl)-1,3-propanedithiol
Colorless to slightly yellow solid
Melting point 71 ˚C		Heptane△
Toluene△
Ethyl acetate△
Ethyl cellosolve△
Methanol×
Water×
TMP-3S
2-Ethyl-2-(mercaptomethyl)-1,3-Propanedithiol
Colorless to slightly yellow solid
Melting point 45 ˚C		Heptane◎
Toluene◎
Ethyl acetate◎
Ethyl cellosolve◎
Methanol○
Water×

At 25 ˚C　◎: 50% (wt/wt)　○: 25% or more (wt/wt)　△: 10% or more (wt/wt)　×: 5% or less (wt/wt)

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Asahi Chemical Co., Ltd.
Asahi Chemical Co., Ltd.

Contribute to society advancement by making better quality products with lower costs based on our higher technological value

Asahi Chemical Co., Ltd. has established a quality policy based on the continuous development of new technology, improved quality and reduced costs. This policy has served us well over the years as we have expanded in value and diversified our capabilities. Since we were established in 1932, we have commercialized one new product after another and succeeded in contributing to the world around us.

Products made by the technologies we have developed (in organic synthesis (thiochemistry), high-pressure gas reactions, coupling reactions (Ullmann reaction), and emulsification) are used widely in the fields of electronic and information-related materials, pharmaceuticals, cosmetics, textiles, and the environment.
In addition, by combining these core technologies, we are aggressively expanding into new fields where further growth is expected.

At the same time, we would like to contribute to human betterment by promoting CSR (corporate social responsibility) in such areas as compliance (legal compliance), protecting the environment, and safety measures.

We will continue to devote ourselves, day after day, to our aim of being a technology company that develops business with a global perspective.

Need more info ?

Multivalent mercaptans Catalog

Asahi Chemical Co., Ltd.

View Catalog

Supplier Information

Description

  1. G-2S(A) CAS No. 584-04-3
  2. PE-2S CAS No. 19333-66-5
  3. PE-3S CAS No. 500283-12-5
  4. PE-4S CAS No. 4720-60-9
  5. TMP-3S CAS No. 121318-18-1

In addition to having 2 to 4 mercapto groups, these have various other characteristics, such as having 1 or 2 hydroxyl groups (① to ③) and having a significantly high sulfur content (①52%, ③52%, ④64%, ⑤53%) … and there are many others. Therefore, such qualities are anticipated to modify the substance’s character by enhancing the hydroxyl group: high refractive index, high heat resistance, transparency, and flexibility.
These are all 97% or more pure.
They have little or no odor.
①, ③ are liquids, ②, ④, ⑤ are solids.
Both are stored in a nitrogen atmosphere.
Solubility varies depending on the compound, but it is usually slightly soluble or difficult to dissolve in water, is soluble in ether, and easily soluble in alcohol, toluene, and hexane.

Compound namePropertySolubility information
G-2S(A)
1,3-Dimercapto-2-propanol
Transparent colorless to pale yellow liquid
Refractive index 1.566		Heptane× Insoluble
Toluene◎
Ethyl acetate◎
Ethyl cellosolve◎
Methanol◎
Water×5% Dissolves
PE-2S
2,2-Bis(mercaptomethyl)-1,3-propanediol
White solid
Melting point 95 ˚C		Heptane×
Toluene×
Ethyl acetate△
Ethyl cellosolve○
Methanol○
Water×
PE-3S
3-mercapto-2,2-bis(mercaptomethyl)-1-propanol
Colorless to slightly yellow solid
Melting point 35 ˚C		Heptane×
Toluene◎
Ethyl acetate◎
Ethyl cellosolve△
Methanol◎
Water×
PE-4S
2,2-Bis(mercaptomethyl)-1,3-propanedithiol
Colorless to slightly yellow solid
Melting point 71 ˚C		Heptane△
Toluene△
Ethyl acetate△
Ethyl cellosolve△
Methanol×
Water×
TMP-3S
2-Ethyl-2-(mercaptomethyl)-1,3-Propanedithiol
Colorless to slightly yellow solid
Melting point 45 ˚C		Heptane◎
Toluene◎
Ethyl acetate◎
Ethyl cellosolve◎
Methanol○
Water×

At 25 ˚C　◎: 50% (wt/wt)　○: 25% or more (wt/wt)　△: 10% or more (wt/wt)　×: 5% or less (wt/wt)

Categories: , ,
Asahi Chemical Co., Ltd.
Asahi Chemical Co., Ltd.

Contribute to society advancement by making better quality products with lower costs based on our higher technological value

Asahi Chemical Co., Ltd. has established a quality policy based on the continuous development of new technology, improved quality and reduced costs. This policy has served us well over the years as we have expanded in value and diversified our capabilities. Since we were established in 1932, we have commercialized one new product after another and succeeded in contributing to the world around us.

Products made by the technologies we have developed (in organic synthesis (thiochemistry), high-pressure gas reactions, coupling reactions (Ullmann reaction), and emulsification) are used widely in the fields of electronic and information-related materials, pharmaceuticals, cosmetics, textiles, and the environment.
In addition, by combining these core technologies, we are aggressively expanding into new fields where further growth is expected.

At the same time, we would like to contribute to human betterment by promoting CSR (corporate social responsibility) in such areas as compliance (legal compliance), protecting the environment, and safety measures.

We will continue to devote ourselves, day after day, to our aim of being a technology company that develops business with a global perspective.

Need more info ?

Multivalent mercaptans Catalog

Asahi Chemical Co., Ltd.

View Catalog

Supplier Information

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