Vermiculite

Specification of Vermiculite – Exfoliated

C.A.S No.                                          : 1318-00-9

Chemical formula                            : (MgFe,Al)3(Al,Si)4O10(OH)2·4H2O

Melting point or range.                    : 1350+C° (Collapse and coalescence of the individual

flakes begin at this temperature.)

Specific Gravity                                :  2.5

Solubility in Water                           :  <1%

Appearance and odor                     :  tan/brown with no odor

SiO2                                                   : 38.03%

Fe2O3                                                : 16.73%

Al2O3                                                 : 14.56%

Cao                                                     : 2.62%

Mgo                                                    : 14.73%

Tio2                                                    : 1.48%

Na2O                                                  : 0.05%

LOI                                                      : 11.8%

Asbestos Content                            : NIL

Applications :

• moulded shapes, bonded with sodium silicate for use in:
  • high-temperature insulation
  • refractory insulation
  • fireproofing of structural steel and pipes
• soil conditioner
• as loose-fill insulation
• packing material, valued for its high absorbency
• suitable as a substrate for various animals and/or incubation of eggs
• lightweight aggregate for plaster, proprietary concrete compounds, firestop mortar and cementitious spray fireproofing
• as an additive to fireproof wallboard
• component of the interior fill for firestop pillows, along with graphite
• carrier for dry handling and slow release of agricultural chemicals

soil additive for plants, together with prelite for potted plants