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Cellulose Acetate

Test Specification...BP
Character It occurs as a white, yellowish-white or greyish-white, hygroscopic powder or granules.
Identification Infrared absorption spectrophotometry.
Solubility Practically insoluble in water, soluble in acetone, in formic acid and in a mixture of equal volumes of methanol and methylene chloride, practically insoluble in ethanol (96%)
Free acid Maximum 0.1%, calculated as acetic acid (dried substances)
Heavy Metals Maximum 10ppm.
Loss on drying Maximum 5.0%
Assay

Not less than 29.0% and not more than 44.8% (dried substances)
Test Specification...EP
Character It occurs as a white, yellowish-white or greyish-white, hygroscopic powder or granules.
Identification

Test A

a. Infrared absorption spectrophotometry.

Solubility Practically insoluble in water, soluble in acetone, in formic acid and in a mixture of equal volumes of methanol and methylene chloride, practically insoluble in ethanol (96%)
Free acid Not more than 0.1%, calculated as acetic acid (dried substances)
Loss on drying Not more than 5.0%
Sulfated ash Not more than 0.1%
Apparent viscosity Specified Test
Assay

Acetyl groups

Not less than 29.0% and not more than 44.8% of acetyl group (dried substances)

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.

Identification

Test(A)

Test(B)

(a)Infrared Absorption

(b) The solution shows a vivid green

fluorescence.

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

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.

Other
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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