Document 6KZQQgw739EOJae4rde8Gm2R

V. Hunn Mlnsral Products Laboratory Jvs 17, 1953 liOe? - LlfHO-WB Spaolal Ksportt Soluble Sulfatas la Panaollth T~320 Pw p o h : To dompars tha soluble aulfats content of current lots of T'omoli'th rr-320 with thut of previous production. Disoussioni Th formation of a sodium sulfate sffloresoenom on the aurimo* of latex paints under oartain uafaromhla drying condit ion* la a raoopiised and still occasionally troubletons phenomenon. C acaequcr.tly* aqr pignents, or othar raw oat#rials* antaring into tha mnufactura of latax paints oust ha as fraa as possible of sodivn sulfate or salts that zdgbt raaot to forr. it. ?ar purpose* of tha reoord and general t'-anwlllanoa, an axae* Inat ion was aadw of ths solid)la sulfata content of several previous mad ounwnt lota of TTmollth W-320. Proasdurs* An intensive leashing was mads to insure oenplete extraction of salubls salts. 20 grams of llthepone wan boilsd 5 nimrime with 150 ml. of distilled watar, flltarad and mashed with an addltioasl 150 ml. of hot watar. Tha plgmsnt was than flushed final tha pepwr and tha laashing repeated. Ths ooafclasd filtrats was than oanseatrwted to approxiraately 175"<OQ ml. ha fora ths cuatonary praolpltatlan of tha aulfats aa barlurt aulfats* Results1 Pramollth IF-320 Lot la. ADSL la. LalMSt v 31010 V 51321 w 5618 it 5621 1 562l a?w: (1952 (1953, 1 ((11995533,! 1 10061 2122 -- -- --* 0.065 0.064 0.066 0.060 0.C61 0.15 0.U 0.12 0.11 0.14 0007--SWP--043785 N23258 It should to understood tost tto sulfate is aot neoessarllgr present as too oodles salt or s u m capable of foracLn* it, but this Is logical la rioo of too trest^at usod la W-320. Csnoluoloai Tho total soluble sulfate ooctent of current production of Poraolith K-J2Q is being mistslnod st Hi# istel of post prsotioo. F. C. Vcrduin.'ff ooi JBB JVH C, H. Adsos Mineral Products Laboratory -20007--SWP-043786 0007-SWP-000127136