ARMY JAN-T-171-1944 TOLUENE《甲苯》.pdf
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1、JAN-T-171 so DECEMBER 1944 JOINT ARMY.NAVY SPBCIPICATION TOLUENE ArmJNumber 1O1138E Navy Number sn7a TIll, eat1Gu . approM by the War aad the NaT7 Department tOI aM of procurement eenteee C!“ ArmJ and the NaT7 and .upened- the toJl:owtq -. U.8.Arm1 GO-U-88D 12 Feb. 19f5 . 10 talDera or all colltalne
2、ra In the lot Ihal1 be 111 . ODe quart abal1J:Oa Of the color of lbl. IOlut1oll and that ot the ample. 111. itelil1er tube8 u the contalDeil. J-4e. Para11l“ ,-,dtocGrte IIlto Babcock mtlktest bottle havtna I neck 4aate.l 14 8 lalle dlfl Ilonlo with eaeb larae cU1I1DD graduated 111 10 IliDaU dbiaton
3、ea61 of wbJcl1l11 equiYaleJlt to 0.02 mJ. Ad4 20 QIl. of itattdet rtaaent. Place a It opper In the bottle. lJDmene It i 0 let bath. lI1d shU. untn moet of the fe8CtIOD hU taken IJlace U lhdic.ate4 b7 dtetoaIe I Kel,du.! fMOftf.-A4cl 410 . 01 t itd. ,honhbt.t. bt2 tD .man pottfODt to 815 mL of “1.4%0
4、.0 1)t1etDt .Ulturie add. AIIO_ tb4t taft to .ta.od uutSJ tIM .upematant Uqulclll tlMI. aDd deeaD. t the 101DtiOD Ui tIM raid 0 Putid of ea.rbon.,eeo;. matter widell bay. pHdJtate4 oat tit. tolotlOQ .boule! be nmo “ Il1t Ut. ItittwtDlel ru.raYfty bottle. V-4e. . ml. ot the sample to a 100 ml. glasa-
5、stoppered cylinder. Add 60- Bawne gasoline fn !i mJ. por lloa8 at 200 C (68- F.) Shake well aeter eacb o.dcUtion. Continue “dlttoes until“ permanent turbIdity appears. Report the volume ot pIOffne required to produce turbtdIty. (lAN-T-lTlJ 0“ Provided by IHSNot for ResaleNo reproduction or networkin
6、g permitted without license from IHS-,-,-F-4h. Cloud poflll.-P1ace 100 mi. of ample In a 100 mt. graduate or standard 011 sample bottJ.e and cool or beat to SO- C. The sample shall show no cloudiness at SO- C. IndIcating a mlnlmum amount ot dissolved or ocduded water. . F-4:I. Cokr of acid teCJ. Ue
7、. S. Bureau of Standards. (FreGuent comparIsons are Iqlportant. espcc:lnJJ1 in t.he early life of the MaUno therm1lmp.ter wbep It I most subject to cbange.) Make the 1-, boo from the ame graduate which Is to be used to receive the dIe:. (1AN-T-17n . -Provided by IHSNot for ResaleNo reproduction or n
8、etworking permitted without license from IHS-,-,-8 ttJJate. Heanle 100 mL of the ample In this grattuate an4 tranafer it to the distillation ftuk. allowln, the qUnder to drain for SO see ond 0 that thl heat GPIlied dlrecl, “0 Ail IimUed area 01 the /fMt onlu anef not around ,he tlde of he /faak, .“
9、order to ,reoenl erTorl due 0 , per-leafing o.f the ol“eM 11apor,. Floal.,. apply heat to the distillation fl.nsk, . ,through the opening in the transite board, at a uniform rote 80 regulated that ebullition OCCUn In not less than 5 nor mo.re than 10 mlnues after heating Is begun. Obse“e the positio
10、n of the ring ot condensing vapor In the flast and adjust tbe beatln, 80 that this ring climbs slowly and steadily. requiring Dot less than 90 . seconds and preferably approximately 1.20 seconds to rise from tbe bottom of the neck ot tbe flask to the bottom of the etde aim. Obse“e 8trlctly the above
11、-prescrlbed time llmlta, Ilnte accurate rem1ts can be secured only In this way. allowing ItIfIIetent time for the .tbermometer to reach equilibrium at the Inlttal bollllll poInt of the sample. R.focord the reading 01 the thermometen at the moment when the ftrst drop of the .dlstillafe fans Into thel
12、1“8duate. then adjust. the beating 80 that the df8t111atlon proceeds at the rate of 8%1 drops every 2 see onda. At the Instant when the bottom of the flask ftret becomes dry, read tbe thermometers and Ilmultaneo1l81y discontinue t.be heating t!IO rapidly that material snperlteatlnl of tbe vapors Is
13、avoided as In dIcated b7 the failure of their teperatllre to rise apfllably above the drypolnt reading. Report these readings after a.klng the follow-In corrections: . . (a) BortJ correctfm.-lIinm a dependable correettoo certificate fnrnlshed preterab17 by tbe Bureau of Standards. (b) Emervent 3tma
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- ARMYJANT1711944TOLUENE 甲苯 PDF
