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Product Name PUR  Green
Chemical Name 3,4,5,6-tetrahydropyrimidine-2-thiol
Molecular Formula PUR environmental protection
CAS No. 2055-46-1
Molecular Weight
Item Standards
Product Form Powder
Appearance White
Initial Melting Point ℃ (≥) 208.0
Loss on Drying % (≤) 0.5
Ash % (≤) 0.5
Residue on 150μm Sieve % (≤)


Residue on 840μm Sieve % (≤)
Vulcanization speed Slow speed

◆ UHOO PUR has been developed as a new thiourea accelerator, similar performance with ETU.

◆ UHOO PUR is used as the vulcanizing agent in the halogenated polymer. When using UHOO 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, UHOO PUR has the same characteristics with ETU. UHOO PUR is the first choice for alternative ETU with good vulcanization performance and good resistance to aging. In addition, UHOO PUR is the effective second accelerator for diene rubber, including EPDM, with no pollution, no discoloration, no bloom. UHOO PUR is used for CR and CPE to replace ETU.

Kraft paper bag 25 kg
Validity 24 months
Package color code

Hebi UHOO New Materials CO., LTD.
Non - tire rubber additives professional manufacturer

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 Domestic Tel: 0392-3333686, 3370932
 International Tel: 86-392-3370959, 3370929
 Email:
 Fax: 0392-3321215, 3370959
 Add: National Economic and Technological Development Zone, Hebi City, Henan Province

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