Granule, water-insoluble

Allura red is a dark red powder or granules soluble in water, insoluble in ethanol. The maximum absorption in water is at 504 nm, at pH 7 = 540). Allura red... 

Brown HT (El55, Cl Food Brown 3, Chocolate brown) is a bis azo dye, with the chemical name disodium 4,4 -(2,4-dihydroxy-5-hydroxymethyl-l,3-phenylene-bisazo) di(naphthalene-l-sulfonate). The calcium and potassium salts are also permitted. Brown HT is a reddish-brown powder or granules, soluble in water, insoluble in ethanol, with a maximum absorption in water at 460 nm, pH 7, = 403). 

White or cream-colored powder, or filaments, grains, or granules. Slighl odor and taste. Insoluble In water insoluble in adds, bui soluble in alkaline solutions. It is used in pharmaceutical products as a food additive as a thickening age ll and stabilizer in ice cream, cheese products, canned fruits, and sausage casings also used in synthetic fibers. 

Note Requirements of MIL-D-3994 for com starch used in pyrotechnic mixts are more numerous and include a)Granulation — not less than 99.5% must pass a No 80 US Std sieve, b)Water, uncombined — not more than 5.0%, c)Ash — not more than 0.15%, d)Water insoluble material — not more than 2.5%, e) Acidity as AcOH — not more than 0.18% and... 

It is important to recognize the differences in utilizing the wet granulation technique for water-soluble and water-insoluble API. Furthermore, concentration of the drug in the blend also plays an important role in these considerations. The water-soluble drugs may have the tendency to become... 

Plants use starch granules for storing energy. When the granules are dried and ground up, different types of starches can be separated by mixing them with hot water. About 20% of the starch is water-soluble amylose, and the remaining 80% is water-insoluble... 

The addition of sulfuric or phosphoric acid (or superphosphate) neutralizes the ammonia and catalyzes the formation of methylene urea. Products containing about 20-30 percent of their nitrogen in a water-insoluble form are produced. Good control of conditions in the granulator and dryer is needed to produce a satisfactory quality of water-insoluble nitrogen. In some cases, a prereactor is used prior to the granulator.50... 

Water-soluble dyes are usually incorporated within the granulation process to ensure even distribution throughout the formulation, but there can be an uneven distribution due to migration of the dye during drying processes. Therefore, water-soluble dyes can also be adsorbed into a carrier such as starch or lactose and dry blended prior to the final mix. Water-insoluble pigments are more popular in direct compression and are dry blended with the other ingredients. 

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