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Performance Chemicals



Technical Name: 3,4,5,6-tetrahydropyrimidine-2-thiol

CAS NO.: 2055-46-1

Technical Specification: 

Appearance         White powder
Initial M.P, ℃ 208.0 min
Loss on drying, % 0.50 max
Ash, % 0.50 max

Residue on 150μm sieve, % 

0.10 max

Residue on 840μm sieve, % ---


PUR has been developed as a new thiourea accelerator, similar performance with ETU. It’s used as the vulcanizing agent in the halogenated polymer. When using PUR, the high performance vulcanized rubber can be obtained in a short period of time, and scorch stability is quite good.

Especially used for CR, PUR has the same characteristics with ETU. PUR is the first choice for alternative ETU with good vulcanization performance and good resistance to aging. In addition, it is the effective second accelerator for diene rubber, including EPDM, with no pollution, no discoloration, no bloom. 

PUR is used for CR and CPE to replace ETU.

Package: 25kg bag.

Storage: The product should be stored in the dry and cooling place with good ventilation, avoid direct sunlight. Since the date of production, the storage period is 24 months.