1、- . -. c- e -_ . / . . . . . . . , . . t:.: Amendment 2 I . . 17 Februarf1967 - . I _ fl1-p-23625 (2) 13 W 9777706 0303583 3 - .- . . - - - - - - mL-p23-62-5(os) . . ,. , . . C. . .-.- ,. , . ” 1: 14 March 1973 SUPERSEDING Amendment i d . - - . . . - . . . .-. -. MILITARY SPECIFICATION PBXN-4 EXPLOS
2、TVE mis amendment forms a part of MZL-P-23625(Wep) of 27 March 1963 and has been approved by the Naval ordnance Systems Command,. Department of the Navy. . By this amendment basic specification mL-P-23625 (Wep) PBXN-4 Ehplosive is changed to read MIL-P-23625 (OS) PBXN-4 Explosive. The basic specific
3、ation has Been declassified by authority in NAV- ORDINST 5511.4 dated 29 December 1972. Page 1 * Bleb FSC 1375 an substitute It FSC 1376. Page 2 . * 3.3.1.2, delete first sentence and substitute: “The melting point shall be not less than 283” C.n Page 3 6 3.3. 1.3, line 2: Delete n0.16R and substitu
4、te f10.20.R :b 3.3.3.1, line 3: Add to end of sentence *or 4.5.1.2.” +3.3.3.4, Une 2: Delete 1t0.30wand substitute “0.55. Page 4 ,1.2.1, line 10: DeletelrlOOO1l and substitute w1500r1 and add new sentence .w Blendlng of heels of less than 50 pounds from accepted batches shall be identi- fied as comp
5、osite lots. . . . . . - - . i .Y: - , - : C-. .-. . . . . . . . . , . .;*:.;*:*;*:;.:*: i:ii: Ei . /;. . i;.:;. . . . E;# , c . . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- . -.,.- - MIL-P-23625 (2) 13 W 9999906 0303584 5 - MIL-P-23625 (OS) . A
6、mendment 2 *- Page 5 4.3, Une 3: Delete specifications fi and substitute specification. * 4.3, line 4: Add I( For alternate apparatus see figure 4. ) fi .e Page 6 Add: the composition of PBXN-4 by extraction is as follows: * “4.5.1.2 Alternate puritv test, An acceptable alternate method for determin
7、ing * t14.5.1.2.1 Eauipment, ,?ritted crucibles, medium porosi . Beaker, 100-ml tall form (Berzelius) Balance, analyticai Oven105“ f 5“ C . Desiccator Vacuum filter flask (500 mi) with adapter Hose connection (rubber). Vacuum source Cover glasses Dimethylsulfoxide ( DMS) 4 technical grade) Glass sti
8、rring rods (2-1/2 inches x 3 mm in diameter with one end flattened). * eg4.5.1.2.2 Procedure. (a) Weigh a O. 5- to 1. O-gram i O. 1 -mg sample into a tared clean dry crucible. Place crucible and contents into a loom1 (Berzelius) tall form beaker containing 15 ml DMS. - (b) i Transfer approximately 1
9、0 ml of dimethylsulfo?dde into the crucible containing the sample. (c) Let stand approximately 10 minutes to soften N. . (d) Crush the pellets with glass stirring rod for ,30 seconds. Let stand for an additional 20 minutes. contents into the adapter on the vacuum filter flask. Turn on vacuum and fil
10、ter; transfer the DMS in the beaker into the crucible and filter. ( f ). After all solvent has filtered through, remove crucible from vacuum filter flask and again place crucible with contents in the beaker containing 15 ml of fresh DMS; transfer 10 ml of DMS into the crucible. (e) Hemove cruciale a
11、nd concmts rrom aeaKer and place me crwible with 2 .-. . , . J I. . ,- ., . . -. . - . . - . . . . . - . . - . . . . . . . . . . . . . , . ,.- _ .-.-. F:.: . . r.:.:.: - . I. - . . . . - . I- . . . .-.-.- - . . - . . . . I . . -. . - . .- - . - -. ._.-. .- . - . . . . . . . . . .-.-.-. .- . ._- . .
12、. . . I- . . . . - . . - . - . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . i*.: . . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. . - i:=: e. -. . . . . . . . MIL-P-23625 (OS) Amendment 2 (g) Repeat steps (b) through (f) unt
13、il the DMS, added to residue in cru- . cible, is clear and colorless after step (d) (cprrection factor riXrf to be figured if the number of times steps (b) through (f) are repeated, exceed six) on vacuum and filter. (h) Place crucible and content into adapter of vacuum .filter flask. Turn (i) Discon
14、nect rubber vacuum tubing from vacuum flask. Add approxi- mately 15 ml of acetone to ths sample in crucible. Stir for 30 seconds and reattach rubber vacuum tubing to vacuum flask and filter. ( j ) Repeat step (i) six times (k) After the sixth extraction; let vacuum remain on until no odor of (1 ) Re
15、move crucible and contents from vacuum filter flask and place in (m) Remove crucible and contents from oven and place in desiccator to (n) When cool, weigh crucible andGontents to nearest 0.1 mg. acetone is evident in crucible. oven at 105? i 5? C for 1 hour. cool for 15 to 20 minutes, * ?4.5.1.2.3
16、Calculation. ? where : A = weight of empty crucible B = weight. of sample plus crucible C = weight of crucible plus weight of extracted sample N = percent nylon X = correction actor 1.0226. (Average recovery for using the amount of DMS specified, Should this amount of DMS be increased, a new correct
17、ion factor wou!d have to be established.) Nrr = 97.79% with a 3-sigma variation of O. 98 percent NOTE: When the 3-sigma variations of this analysis is applied to the nylon percentage, this makes reproducibility of this analysis procedure equal to O, 06 percent. Ir 3 . - . I_. . . . . . . . . . . . .
18、 . . - - . - . . . . . . ! . . . ? . . . . . ?- I- .- . . -.-. . -. - ,. ,. ? -.-.-. . . . I . . . . . . . . . . . I .- . - .-.- .-.* c? z,.zz. . I: . . . . . . - . . I. . . r I . , . r: , -. 1 . I.- . .- . . -. . . . . - . . . - . , . . . . . . . . _.- . . . . . . . -. . . i. . I . - . . . . . . -.
19、 -.- . . . . . . .-. . . . . ,. 6 .-.- . - . . . I . . . . . . . . .* . . . . . . . . . . -.-.- . . - . - . . . _. . . I . - - _ . - . . . . . . -.I ,.- . ,. t:=.: :.Y. ;-:i-:* . . . . . . . . ” . . . . . .I. I. ,.- -.-. -. -. . -,- . . . . . . . . . . . . . . . . . . . . . . c:. , t: I, L:” . . . .- . -) ;.Y, : 1 i: .- i . . . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
