Synthetic Red Oxide as per IS 44 : 1991, Grade 2.
(1) Volatile Matter Ð Â Ð â Р вÐÑÐ ÐÐ âÐ¡Ñ 0.50% by mass (max)
(2) Residue on sieve (B.S 240 mesh) Ð Â Ð â Р вÐÑÐ ÐÐ âÐ¡Ñ 0.50% by mass (max)
(3) Oil absorption - +/- 10 of approved sample.
(4) Color Staining Power Ð Â Ð â Р вÐÑÐ ÐÐ âÐ¡Ñ Not inferior to approved sample.
Under Tone Ð Â Ð â Р вÐÑÐ ÐÐ âÐ¡Ñ (Close match to the approved sample).
(5) Matter soluble in matter Ð Â Ð â Р вÐÑÐ ÐÐ âÐ¡Ñ 0.50% by mass (max)
(6) Sum of water soluble Chloride and Sulphate expressed as CL and SO4 Ð Â Ð â Р вÐÑÐ ÐÐ âÐ¡Ñ 0.10% by mass (max).
(7) Acidity (as H2SO4) or alkalinity (as NaOH) Ð Â Ð â Р вÐÑÐ ÐÐ âÐ¡Ñ 0.10% by mass (max)
(8) pH of aqueous extract - +/- 1 of approved sample.
(9) Total Iron (as Fe2O3) Ð Â Ð â Р вÐÑÐ ÐÐ âÐ¡Ñ 94% by mass (min)
(10) Ferrous Iron (Fe2O3) Ð Â Ð â Р вÐÑÐ ÐÐ âÐ¡Ñ 1.5% by mass (max)
(11) Calcium compounds (as Cao) Ð Â Ð â Р вÐÑÐ ÐÐ âÐ¡Ñ 2.25% by mass (max)
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