Triphenyl Bismuth form TAN YUN

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
1.3 Structure formula:


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:
Item Index
Purity,% ≥97.5
Melting point,℃ ≥77.0
Bi content.% 47.0-47.9
Insoluble in acetone content,% ≤0.10
Mg content,% ≤0.003
Total halogen content(in Cl),% ≤0.05
Appearance White  or milky crystal, 
no visible impurities
 3. Uses: 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 cyclooctatraene, 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.
 5. Package: Sealed, hard, round plastic box. 500 or 1000g net each. Packing according to the requirements of clients
 6. Storage: Sealed preservation. Store at cool and ventilate. Shelf life of 12 months, if expire, still used if up to standard through retest.
 7. Transportation: Avoid sunlight, rain and ultraviolet. Stay away from the strong oxidizer.