Talc Powder

PROPERTY

UNIT

SPECIFICATIONS

Description

--

A white almost white powder, free from grittiness, readily adheres to the skin unctuous on the touch, Odourless

Solubility

--

Practically insoluble in water , in ethanol (96%) and in dilute solutions of acids

Identification

--

By Infrared absorption spectrum of the substance being examined in potassium bromide dispersion should show absorption, bands at 3677 cm, at 1018 cm and at 669  cm

A white, crystalline precipitated should be formed with Di Sodium hydrogen phosphate

The residue obtained in identification test B should give reaction of silicates.

Acidity or Alkanity

NMT 0.3 ml of 0.01 M hydrochloric acid to to make it acidic

NMT 0.3 ml of 0.1 M HCLrequired to make it acidic

Water-Soluble Substances

% max

0.2

Chloride

 PPM max

250

Iron

% max

10

Loss on Drying

% max

NMT 1.0 %@108°C/1Hour

Acid Soluble substance

%

NMT 2%

Carbonate Test

-

No effervescence with HCL

Organic Compound

-

Colour of material after LOD NMT slight yellow or gray

Microbial Contamination

cfu/gm max

1-For tropical application total viable microbial count NMT total of 100 per gm

2-For Oral administration total viable microbial count NMT 1000 cfu Bacteria and NMT 100 cfu Fungi & Yeast per gm