HEAT COLOR TESTING SHOWS...
LOWER HEAT COLOR FOR PITTSBURGH PHTHALIC ANHYDRIDE Tests prove it! Phthalic having low heat color, is the key to low color resins that result in prime quality resins. Typical analyses of 1962 Pittsburgh Phthalic Anhydride show heat colors of less than 35 APHA. How does your present phthalic supply compare? • Write or call for a copy of Pittsburgh Chemical's Phthalic Heat INDUSTRIAL CHEMICALS DIVISION Color Test Method. • You'll find it worth your while to specify highest quality Pittsburgh Phthalic AnhyW3ITP "1*^5 F t I I ¥ 9 fm H dride—Maleic Anhydride and Fumaric Acid, too. Get "^• • ^ AI #?r% M cost-saving details from the Pittsburgh Chemical C r l E I V I I C A L C O • Company office nearest you. n-42oo GRANT BUILDING PITTSBURGH 19, PA. 9
A Subsidiary of PITTSBURGH COKE & CHEMICAL CO.
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