Triphenyl bismuth（TPB)

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Uses:

Triphenyl bismuth (TPB) is used as a curing catalyst for high velocity butyl hydroxyl propellants. TPB reduces the curing temperature and time of the propellant without negative effect on its processing and mechanical properties.
It can also be used as a catalyst for the polymerisation of acetylene into cyclooctyltetracene, a catalyst for the polymerisation of formaldehyde, a ripening agent for polycyclic chlorides, and a catalyst for the polymerisation of certain other monomers, etc.

Packing: in sealed rigid round plastic box, net weight 500g, 1000g per box, or according to customer's requirement.

Specification:

Items		index	Test Method
Purity	%	≥99.0	HPLC internal standard method
Melting point	℃	79.0±2	Capillary measurement
Bi	%	47.0~48.0	Titration
Acetone insoluble matter	%	≤0.10	Dissolution Filtration
Mg	%	≤0.003	atomic absorption spectrometry (AAS)
Mass fraction of total halogens (as chlorine)	%	≤0.05	Colorimetry
Particle size		Passed through a standard 20 mesh sieve, pass	The sieve method
Apperance	/	White crystal or powder, without cake	Visual inspection