Rubber grade talc powder

SiO2%≥

35

LOI（1000℃）%≤

24

Moisture%≤

0.3

Acid-soluble substance%≤

15

Acid-soluble iron（Fe2O3）%≤

3.0

Soluble copper%≤

0.005

Soluble manganese%≤

0.05

Passing rate (45um) %≥

98.5

PH

7-9

Fineness: 98.5% min passing through 325mesh or negotiated by the buyer and the seller.

Packing: paper bag or knitting bag of 25Kgs net each (or negotiated by two parties)

Note: This is only reference, the concrete standard shall be decided by two parties.