Dibasic lead Phosphite

MF: 2PbOPbHPO₃H₂O

Properties:

White or light yellow powder, sweet and toxic, density 6.1,RR 2.25,

Quality index: HG2339-92

Item	Premium grade	First grade	Salable product
Lead (PbO) %	89.0-91.0	89.0-91.0	88.5-91.5
Phosphite (H3PO3)%	10.0-12.0	10.0-12.0	9.0-12.0
Loss on dry %	0.30	0.40	0.60
Residue on 75¦Ìm screen %	0.30	0.40	0.80

Uses:

The heat stabilizer of PVC and PVC-polyethene polymer, mainly used in opaque products, such as cable, plate, pipe, corrugated board.

Dibasic lead stearate

MF: 2PbOPb(C₁₇H₃₅COO)₂

Properties:

White powder, RD 2.15,MP >280(decompound),RR 1.60,

Quality index: Q/WHL203-1999

Item	Quality index
Lead %	51.51.5
Moisture %	1.0
Fineness on 150mess screen %	99.5

Uses: The heat stabilizer of PVC, for extrude product, such as pipe, wire, injection appliance, corrugated plate etc.