Siri Chemicals (located in Hyderabad, India) is a manufacturer of Zinc Oxide (White Seal). We market our product under SIRI brand.
Zinc Oxide is mainly useful in rubber, ceramics, glass, paints, and poultry industries.
Zinc has been known in India since long time.In the Ayurvedic treatise this metal has been named Yashada.Zinc does not occur free in nature, but occures in combined state in the form of ore.
Symbol: Zn; Atomic Number (Z): 30; Atomic Weight (A): 65.38; Electronic configuration (Ar): 3d104s2
From Zinc, Zinc Oxide is manufactured. 2Zn+O2→ 2ZnO
Zinc Oxide is generally manufactured in three grades:
- White Seal: Characterised by brilliant whiteness, high apparent volume and extreme fineness. This grade is considered to be the purest form.
- Green Seal: Apparently similar to the white but of less volume.
- Red Seal: Considered to be cheapest grade of Zinc Oxide with relatively less whiteness and smoothness.
The grades vary according to degree of whiteness, bulk density and fineness.
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