Vermiculite

1. Density: Raw Vermiculite	: 22 to 40 kg/Cft
Expanded	: 1.6 to 4.5 kg/Cft
2. Incombustibility	: Can be used upto 1100° C
3. Sintering temperature	: 1260° C
4. Melting point	: 1300° C
5. Specific gravity	: 2.2 to 2.7
6. Hardness	: 1.5 to 3 on M.O.H’s scale
7. pH valve	: 7.0 {alkaline}
8. Expansion	: 10 to 20 times its original volume
9. Thermal Conductivity	: 0.053 to 0.056 at 70° C mean K Cal/m/hr/°C
10. Solubility	: Insoluble in water or organic solvent
11. Cation exchange	90 to 100 milli equivalents as per 100 gms
12. Water absorption retained by Expanded Vermiculite per Cu Ft.	: 10 to 12 litres of water
13. Water vapour absorption in relation
To humidity :
Raw	: 2.6% By Weight
Expanded	: 1% by Weight

CHEMICAL ANALYSIS OF VERMICULITE
Si O₂	-----------	40.50%
Fe₂0₃	-----------	10.50%
Ti 0₂	-----------	0.80%
AI₂0₃	-----------	18.50%
Mg0	-----------	12.50%
K₂0	-----------	2.25%
Na₂0	-----------	3.50%
LOI	-----------	5.00%

Note : Chemical analysis of crude and exfoliated vermiculite is the same except L.O.I

DUGAR INSULATIONS INDIA PRIVATE LIMITED

Regd.Office : DUGAR TOWERS

7th Floor, #34(123), Marshalls Road,

Egmore, Chennai - 600008

Tel : +044 28552244

Mob : +91 9043912555

Physical & Chemical Properties of Raw and Dugarlite Exfoliated Vermiculite