Zinc Oxide is a white fine fluffy powder with wide range of particle size from 5 microns to 0.1 microns depending upon the process of manufacture. It turns yellow in high temperature but regains its colour on cooling. It does not melt but sublimes at ordinary pressures at 1975±25°C. It exhibits thermoluminiescence and photoconductivity. Its solubility in water is 0.005 gm/ltr. at 25°C. A slurry of the commercial product has a PH of 7.5 - 7.9. The oxide is more soluble in aqueous ammonia (0.28 gm/ltr. in 1% ammonia at 25°C). It is a stable compound and can be stored for considerable period of time.
STANDARDS : Confirms to IS 3399-1993, IS 2850-1964, IS 1880-1977, IS 7086-1973, IS 35-1975, IS 265-1987 and BS 254 of 1952.
GRADES OF ZINC OXIDE : The following grades of Zinc Oxide are normally available STALLONE OVERSEAS PVT. LTD. to meet the varying and exacting BRAND: STALLONEZ
Premium Zinc Oxide - Grade 99.80%
Commercial Zinc oxide - Grade 99.20%
PACKING : 25 kg. net in HPDE bag branded in green with inner plastic coating requirements of the consumers : a. White Seal for Paints and Ceramics b. White Seal for Rubber Products c. Off White for others
BRAND : STALLONEZ
PACKING : 25 kg. net in HPDE bag branded in green with inner plastic coating
PHISICAL & CHEMICAL CHARACTERISTICS: Nature : Fine Dry Powder Colour: White Odour : Odourless Molecular Weight: 81.37 Melting Point/Freezing Point : Sublimes at 1975°C pH : Neutral Solubility in Water : 4 - 6 ppm in distilled water at 25°C Volatile matter 100±10°C Max : 0.1 Loss on ignition % Max : 0.1 Insoluble in dilute HCl : Nil Oil absorption : 11 - 15 Reducing Power : Comparable with standard approved sample Purity % Min : 99.5 Specific gravity : 5.50 to 5.68 Residue on 45 micron IS sieve : 0.08 to 0.15 Residue on 74 micron IS sieve : 0.05 Lead (Pb) % by mass : 0.01 to 0.10 Copper (Cu) % by mass : 0.0002 to 0.001 Manganese (Mn) % by mass : 0.0008 to 0.003 Moisture content & by mass : 0.03 to 0.25 Bulk density : 450 to 550 gm/cc