Document RJzBRKZ35bwaOYvnKYj4jgaLz

t!in%:. .a { V 'i1'/ " i VV/ vm. i LCC;. (ru.^? f % 'zfziftr C T F A Specification TALC (Formerly T G A Spec Mo. IO) Revud; 3-2 3 -Cr s-:o-73 D E F iN IT IO N ; /^T V \ -- 4 ---------------------------- Talc is a white, odorless or very slightly earthy, finely powdered, native, hydrous, mag nesium silicate, sometimes containing a small portion of aluminum silicate. TEST S P E C IF IC A T IO N METHOD Color Odorless Identification Slip . Lustre . Carbonates A s specified by the buyer and showing no change after heating A s specified by the buyer Positive: Close match to C T FA Spectrum-- IR with no indication of foreign materials A s specified by the buyer Do. N o effervescence Water-Soluble Screen Test Alkalis and Ac i ds . . . . . . Passes test 100% through 100 mssh 98 % minimum through 200 mesh Finer grades: as specified by the buyer Neutral to litmus paper .Water Soluble Substances . . Acid-Soluble Substances , , . Loss on Ig n it io n ................ Arsenic (as A s } ................... Lead (as P b )....................... 0,1% maximum 2.0% maximum 5,0% maximum 3 ppm maximum 20 ppm maximum Heat 1 to 2 g at 200 C For 5 minutes C T F A G 3-1 U SP XV1U, page 70S Observe reactlori for cffsA'cscance during digestion in Test for Acid-Soiubie Substances C T F A C 6-1 U SP X V III, page 708 See Test for Reaction and Soi uble Substances. Do. USP X V III, page 708 Do. C T F A F 1-1, Parts l-A and II C T F A F 2-1, Parts l-A and II t r f / f -- ----- COSMETIC, TOILETRY AND FRAGRANTE ASSOCIATION, INC. 1625 Eye Street, N.W., Washington, D.C. 200C6