A.C.A.C.I.A. POWDER. Acacia Powder is Acacia in powder form. Description

ACACIA Gum Anacia, Indian GumAcacia is the dried, gummy exudation from the stem and branches of Acacia nilotica (Linn. ) Del. subsp indica (Benth .) Brenan (syn. A arabica Willd var. indica Benth. ) (Fam Leguminosae), or other species of Acacia. Category; Pharmaceutical aid (emulsifying and suspending agent). Description; Irregular and broken pieces (tears) of varying size, yellow, sh-white, yellow or amber in colour, with numerous minute fissures, brittle fractured surface, glassy and occasionally iridescent, odourless Solubility; Almost entirely soluble in twice its weight of water yielding a very viscous, slightly acidic solution which is slightly glairy and, when diluted with more water and allowed to stand, yields a very small amount of gummy deposit, practically insoluble in ethanol (95%) and in ether. Storage; Store in tightly-closed containers, protected from moisture STANDARDS Identification ;A: An aqueous solution is gelatinised by the addition of lead subacetate solution. B: To 5 ml of a 10% w/v solution add gradually, while shaking, 10 ml of ethanol (95%) The cloudy liquid, on addition of 0 .5 ml of acetic acid, gives a white precipitate Filter and add to the clear filtrate 50 ml of ammonium oxalate solution, the filtrate becomes cloudy. C: A 10% wA/ solution is either dextro- rotatory or slightly Iaevo-rotatory. Sterculia gum and agar. To 50 mg of the powdered substance being examined add 0.2 ml of freshly prepared ruthenium red solution and examine microscopically, the particles do not'acquire a red colour after irrigation with water. Agar and tragacanth To 10 ml of a 10% w/v solution add 02 ml of lead acetate solution, no precipitate is produced Starch and dextrin; Boil 10 ml of a 1 0% w/v solution and cool, add 0 .1 ml of O. O5M iodine, no blue or brown colour is produced .Tannins; To 10 ml of a 10% w/v solution add 0.1 ml of ferric chloride test solution, a gelatinous precipitate is formed, but neither the precipitate nor the liquid "shows a dark blue colour. Sucrose and fructose; To 1 ml. of a 1 0% w/v solution add 4 ml of water, 0 .1 g of resorcinol and 2 ml of hydrochloric acid and heat on a water-bath, no yellow. or pink colour develops. Water-insoluble matter; Dissolve 5 g of a fine powder in about 100 ml of water in a 25Q-m1 Ehenmeyer flask, add 10 ml of dilute hydrochloric acid and boil gently for 15 minutes. Filter by suction while hot through a sintered-glass crucible,previously tared, wash thoroughly with hot water, dry at 105° and weigh, the residue does not exceed 50 mg. Sulphated ash; Not more than 5 0%, Appendix 3.22. Acid-insoluble ash; Not more than 1. 0%, determined on 1 g. Appendix 3; 39 Loss on drying; Not more than 15 .0%, determined on 1 g by drying in an oven at 105°, Appendix 8. 6. Microbial limits; 1. 0 g is free from Escherichia coli. Appendix 9.4.A.C.A.C.I.A. POWDER. Acacia Powder is Acacia in powder form. Description; White or yellowish-white powder, odourless, on treatment with water it dissolves to give a mucilaginous liquid which is colourless or yellowish, dense, viscous, adhesive and translucent .Solubility; As stated under Anacia Storage; Store in tightly-closed containers, protected from moisture . STANDARDS Identification, Sterculia gum and agar, Agar and tragacanth, Starch and dextrin, Tannins, Sucrose and fructose, Water-insoluble matter, Sulphated ash, Acid-insoluble ash,