PharmaceuticalsMineral FortifiersSpeciality ChemicalsCellulose Acetate Phthalate USP


Cellulose Acetate Phthalate USP

Test Specification………USP
Characters It occurs as a White, free-flowing powder or colourless flakes; odourless or with a faint odour of

acetic acid; hygroscopic.





(a)Infrared Absorption

(b) The solution shows a vivid green


Solubility Freely soluble in acetone; soluble in diethylene glycol and in dioxan; practically insoluble in water, in ethanol (95%), in toluene and in chlorinated and

non-chlorinated aliphatic hydrocarbons. It dissolves in dilute solutions of alkalis.

Limit of free acid Not more than 3.0%.
Heavy metals Not more than 20 ppm
Viscosity 50 to 90 mm2/s
Appearance of a film A thin, colourless, transparent and glossy

film is produced.

Sulphated ash Not more than 0.1%.
Water Not more than 5.0%.
Residual solvents Meets the requirement

Assay of acetyl groups

(anhydrous acid-free)

Assay of Hydrogen phthaloyl groups (anhydrous, acid-free)


Not less than and 17.0% and Not more than 26.0%


Not less than and 30.0% and Not more than 40.0%

Shelf life, Storage and Packing
It should be stored in a segregated area in a cool and ventilated place away from combustible materials. Keep in a tightly closed container, sealed until ready for use. It is packed in 25kg or 50kg HDPE bags or drums as required.


GLP, cGMP (FDA) Approved, ISO 9001, ISO 14001, ISO 45001, ISO 17025, ISO 22000, FSSC 22000, FSSAI, Halal and Kosher certified.
We observe WHO Good manufacturing practice and Good laboratory practice.

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