BENTONITE (SODIUM TYPE)

BENTONITE

FORMULA: (Mg-Ca)O-Al₂O₃-5SiO₂-nH₂O

CAS NO.: 1302-78-9

GRADE: SODIUM TYPE

DESCRIPTION: POWDER. RELATIVE DENSITY IS AROUND 2, MELTING POINT IS 1330--1430℃.

SPECIFICATIONS:

ITEM	GRADE 1	GRADE 2
ABSORBING METHYLENE-BLUE VALUE (g/100g)	32 MIN.	32 MIN.
GELATINE (ml/15g)	500	400
EXPANDED MULTIPLE (ml/g)	50 MIN.	20 MIN.
WET PRESS STRENGTH (kpa)	50 MIN.	40 MIN.
HEAT-WET TENSILE STRENGTH (kpa)	3.0	2.0
PH VALUE	8.0-9.5	8.0-9.5
MOISTURE	10% MAX.	10% MAX.
FINENESS (THOUGH 200 MESH)	95% MIN.	95% MIN.

USES: used to be the foundry sand binder in cast iron and cast steal's mixed mould, surface dry mould, fired mould and pressure moulding.

PACKING: PACKED IN 25KG/50KG/1000KG NET BAG.

HS.NO.: 2508.1000