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Quick Details

  • Classification: Catalyst
  • CAS No.: 603-33-8
  • Other Names: TPB
  • MF: C18H15Bi
  • EINECS No.: nione
  • Purity: 97.5%min
  • Place of Origin: Liaoning, China (Mainland)
  • Application: Chemical Catalyst
  • Brand Name: Tanyun
  • Model Number: CAS RN:603-33-8
  • Product name: Triphenyl Bismuth
  • Appearance: White or milky crystal, no visible impurities
  • Color: white or milky
  • Usage: curing catalyst & catalyst of polycyclochlorides
  • CAS: 603-33-8
  • Executive standard: GJB 5276-2003
  • dosage of TPB: 0.006%-0.005%
  • Packing: sealed, hard ,cycloidal plastic case
  • Synonyms: TPB

Packaging & Delivery

Packaging Details Packing: Sealed, hard, cycloidal plastic case. Net weight 500g or 1000g per bottle. Packing can be adjusted according to the clients' requests.
Delivery Time 7 working days
Product Description


Triphenyl Bismuth

 Executive standard: GJB 5276-2003

 CAS RN: 603-33-8

 1. Physical and chemical properties:

1.1 Molecular formula: C18H15Bi

1.2 Molecular Weight: 440.3


1.4 Solubility: Insoluble in water, but dissolved in anhydrous alcohol and n-heptane.

1.5 Stability and reactivity: Stable at normal temperature and pressures, but reacts with moisture, strong oxidant and strong ultraviolet light.

 2. Technical indexes:





Melting point,


Bi content.%


Insoluble in acetone content,%


Mg content,%


Total halogen content(in Cl),%



White  or milky crystal,

no visible impurities

 3. Application: Triphenyl bismuth (TPB) has been used as the curing catalyst of HTPB propellant. TPB could decrease curing temperature and reduce curing time of the propellant, as well as it has no damaging effect on the performance and mechanics properties. The dosage of TPB is 0.006%-0.05% of total weight for the propellant. Curing time is a week in 50. TPB can be also used as the catalyst of the polymerization for ethyne into cyclooctatetraene, formaldehyde, the curing agent for polycyclochlorides, and other monomers etc.


 4. Safety instructions: Toxic by ingestion and inhalation. Eye and skin contact can cause inflammation. Operation must be installed with rubber gloves, a respirator and eye protection by wearing protective clothing.

Packaging & Shipping

 Packing: Sealed, hard, cycloidal plastic case. Net weight 500g or 1000g per bottle. Packing can be adjusted according to the clients’ requests.

Storage: Stored in a cool, ventilated place. The shelf life is 12 months after manufacturer date. It is still available if retest result is qualified after expire date.

Transportation: Should prevent rain drenched, sunning and ultraviolet during transportation. Keep away from strong oxiizers.

Company Information




    46 years of manufacturing fine chemicals



Tanyun Chemical is the first domestic technological platform company of Chemical New Materials Production and Research Incubator and the first domestic custom-made research and production company of fine chemicals intermediate research and production company.

Technology strength

Tanyun Chemical established an Industrialization Experiments Center (with domestic advanced level) in Yingkou and set up four world-class Technological R&D Centers and R&D laboratories.Tanyun can provide high quality products tailored to the needs of domestic and foreign clients.



For years, it has undertaken over 80 domestic and foreign key research projects and been awarded over 50 municipal, provincial and national prizes for progress in science and technology. The products have been widely applied in areas including aviation, aerospace, military industry, civil industry and been sold to over 20 countries and areas, gaining wide recognition home and abroad.

 Our service     

We are able to develop custom-made products according to the clients’ requests.










1.Why  choose us?

We are the manufacturer with more than 40 years history. we can supply one-stop service from sample ,development and research, order, delivery, after-sale service

2.What is our payment term?

T/T in advance

3.Delivery time?

ASAP after your payment


4.Are u manufacturer?

Yes,we are manufacturer

5.How are  your products?

 We have four word-class R&D bases  and provide you products with high quality and competitive price.




Welcome to contact us


                                      phone: +86 13906985537

                                     whastApp: +86 13906985537

                                     skype:Claier Shi 

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