ARMY MIL-L-65 A-1968 LEAD THIOCYANATE (SULPHOCYANATE)《硫氰酸铅(硫氰酸铵)》.pdf

1、l. MIL-L-65A 68 7937706 0423057 1 MIL -L -5A 12 February 1968 % SrnEBSEBrnG JAM -L -65 September 30, 1944 + AblErnNT l. 19 March 1953 y a u3 al -L) 1. SCOPE 1.1 “his specification covero lead thiocyanate for use in the manufacture of priming mixtures. 2. APPLICABLE DOCWMTS . 2.1 The following docume

2、nts of the issue in effect on date of invitation for bids OP request for proposal, form a part of the specification to the extent specified herein. SPECIFPCdlTIONS FEDERAL RR-S-366 - Sieves, Standard, Testing PPP-C-301 - Chemicals, Dry and Baste, Packaging and Backing of BBP-D-723 - Bmai, Fiber m.-S

3、TD-129 - Marking for Shipment and Storage PSC 6810 Obtained From GLOBAL ENGINEERING DOCUMENTS 2625 So.Hickory St. Santa Ana, CA 92709 (914)540-9870: (213)624-1216: (800)85$-9179 * Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-658 (Copies of s

4、pecifications standards I drawings I end publications required by eugpliers in connection with specific procurement unctions should be obtained from the procuring activity or 88 directed by the contracting oPEicer .) 22 fim- b eitions, The following documeats fom B pert of this specification Eo Ehe

5、extent: speceied herein, UnLees atherwise indcaesd, the iasue ta eect on date of invitation for bids or request for propseal. shall apply, Uniarm Freight Classification (Application for copiee of these ratiagsr, rulee and regulationa should be addreaeed to Uniform ClaaeEication Committee I 20% Union

6、 Station, 516 Weat Jackson Eoulevard, Chicago, Xllinoie 60606 .) MR(CAN TRUCKING ASSOCIATION National Motor Freight: Claesification Rules and Coataiaer Regulations (Application for copies should be sddrestjed to the NatbnaL Claestfieation Board, 1424 Sixteenth Street, N,W. , Waehington, D,C, 20036,)

7、 49 CFR 91-90 - Rule8 and Regulation8 of the Transportation of Exploeivern and Other Datigeroue Articles (Application for Copies should be addressed to the Superintendene of Daeumente, Government: Printing OEEiee I Washington, D. C, 20402 Standard D1193-66 - Reagent: Watr Application or copie8 shoul

8、d be addreeaed Co the American Society for Teeting and Matericilrr, 1916 Race Street, Philadelphia, Pa. 19103.) 3.1 Color and sppeafenee, The material shall be white or yellow ia color arid free from uieble mpuritiee when teated $8 specified in 3.2 Form, The material 8halI con8Bt of diecrete crystal

9、s when ea opecif Led- in 4,5., 2 . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-65A 68 9999906 0423059 5 3.3 Granulation. One hundred percent shall pass through U. S. standard sieve Mo. 140, and 75 percent through U. S. standard sieve No. 32

10、5 when tested as specified in 4.5.3. 3.4 Chemical and physical properties. Chemical and Physical properties shall be as indicated in table I. Table I. Chemical and pbysisal properties Test Lead as lead thiocyanate, X min. 99.3 4.5.4 Thiocyanate as lead thiocyanate, % min. 99.3 4.5.5 Sodium, as sodiu

11、m thiocyanate, % mari. 0.20 4.5.7 3 0.20 4.5.9 Chloride, as leed chloride, % max. 0.20 4.5.6 Moisture, % max. 0.20 4.5.8 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract OP purchase order, the supplier is responsible for the performance of

12、 al1 inspection requirements as specified herein. Except as otherwise specified, the supplier may utilize his own facilities or any comercial Laboratory acceptable to the Government. The Government resemes the right to perform any of the inspections set forth in the specificetion where such inspecti

13、ons are deemed necessary to assure that supplies and services conform to prescribed requirements. 4.1.1 . The contractor shall provide and maintain an adequate quality assurance system acceptable to the Government covering the supplies under the contract. A current written description of the system

14、shall be submitted to the contracting officer prior to initiation of production. The written description will be con- sidered acceptable when, as a minimum, it provides the quality assurance required by this specification. of and obtain approval for any change to the written procedure that might aff

15、ect the degree of assurance required by this specification or other applicable documents referenced herein. The contractor shall notify the Government 4.2 % A lot shall consist of a maximum of 1,000 pounds, produced by one manufacturer, at one plant, from the same materiels and under essentially the

16、 same manufacturing conditions. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-43 the tests. fallow$: Water n accordance with ASrPM Dl193 and reagent grade Teste shall be co-nductecl 8s 4.5.1 Color and amearance. Take fout: portions of about 0.5 m

17、g. each from dPferent placee in the sample end spread them over an area of about: 2 sq, cm. on ti glass microscopfc slide, Examine the material macroscopic- ally for color and impurities under daylight: illumination and misroeespie- ally far impurities and aggregates of crystale using a magnificatio

18、n of abeut: 30 times end refleeted light. 4.5.2 w, Select; our portions each of approximately 6.5 mg. from different: areas of the aslmple and Bpread over an area of approximately 2 riq, cml on Q glace microacopic slide. Obeierve the crystalline shape of the material microscopically ueng a magnifica

19、tion of about: 30 times and ref leefxd light, 4.5,3 . Place 8 U. S. etandard sieve No, 140 on tep of a U, S, standard eieve No, 325 and attach a receiving pan to the letter. Placa 100 gm, of the sample OR the top sieve, cover, and shake for 5 minutes by moans o e mechanical shaker geared to produce

20、300 2 15 gyrations and 150 f 10 tapa of the striker per minute, Weigh the amount of material retained on each sieve and calculate the percentage of material pawing through each aieve, Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-L-hCiA bi 777

21、9706 OLi230bL 3 MIL -L -65A 4.5.4 u. Transfer 0.5 gm. of the sample, weighed to 0.1 mg., to 400 ml. beaker. Add 25 ml. of water and 3 ml. of CORCeRtrated nitric acid, cover with a watch glass and warm carefully to dissolve. Add 10 ml. of 1 to 1 sulfuric acid and evaporate to fumes of sulfuric acid.

22、Cool, add about 75 ml. of water and warm to dissolve the soluble salts. Add 75 ml. of 95 percent ethyl alsohol and allow to stand for 2 hours. Filter on a tared sintered porcelain crucible of fine porosity (or a Gooch crucible with an asbestos mat). and then wash with 50 percent alcohol. Dry. in an

23、oven at 105“ to 110C for 30 minutes, then ignite in a muffle furnace at 550“ to 600C for 15 minutes. Cool in a desiccator and weigh. Calculate the percent lead thiocyanate as follows: Transfer and wash with 3 percent sulfuric acid 106.68 Bercent lead thiocyanate = - - 1.16 x percent lead chloride W

24、where: A = weight of precipitate, g 50 ml,$ filter through B medium texture filter paper info BL 156 ml, beaker, ad wash with tl total of 56 ml. OP tiater, Diecard the precipitate and evuporate the filtrate nearly to dryneee, Add 25 ml, of water, neutralize to litmus paper with ammonium hydroxide, s

25、nd add 3 ml. exces ammonium hydroxide. beaker and wash with a small amount: o? water. Diecard the-precipitate and evaporate the filtrate to a volume of 3 to 5 ml. Add 25 ml, sf magneaiutni uranyl acetate solution and aow to etand for i hour at 20% while stir- ring occaeionaly , Filter the precipitat

26、e (2Nci62#30:! *2Mg(C$I3O2)2 a6U02 (CH302)2 * i3HzO) on a tared sntered glass crucible o? medium poroeity und tracieEer nad wash the precipitate with a total of 25 to 30 ml, of wash eolutionr Dry at 100* to 110C for 1 hour, ea01 in a desiccator, und weigh, Calculate the percent sodium 8s sodium thio

27、cyanate a8 Eollowe: Filter through a medium texture filter pager into a 150 ml. 5.408 w Percent: sodium thiocyans te = where: A P weight of precipitate, gm. W = weght OP sample, 4,5.8 eloieEure, Spread out 10 gai. o? the sample on a watch glass, weigh the watch glass plue the SEIMQ place in a sulfur

28、ic acid deeiccator overnight, and weigk again, Calculate the percent moisture as fellowe: percent misture 8 9 u Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-65A 4.5.9 Insoluble matter. Weigh a 5 gm. sample into a 1 liter beaker, add 800 ml.

29、of a 5 percent solutioa of acetic acid and stir until the lead thiocyanate is dissolved. Filter through a tared glass crucible of medium porosity and wash with 5 percent acetic acid and then with. water. 100“ to 110C for 2 hours, cool in a desiccator, and weigh. Calculate the percent insoluble matte

30、r as follows: Dry at Percent insoluble matter = w where: A = weight of residue, gm. W = weight of smple, gm. 5. PREPARATION FOR DELIVERY 5.1 Packing and packaging. 5.1.1 Level A. Lead thiocyanate shall be packaged in a heat-sealed polyethylene bag in accordance with PPP-(2-301 inside a lined fiber d

31、rum conforming to PBP-D-723, type III, grade A. Each drum shall not exceed 200 pounds ned . (See 6.1). 5.1.2 Level B. Lead thiocyanate shall be packaged in a heat-sealed polyethylene bag in accordance with PPP-(2-301 inside a lined fiber drum conforming to PPP-D-723, type II, grade A. Each drum shal

32、l not exceed 100 pounds net. (see 6.1). 5.1.3 Level C. Lead thiocyanate shall be packed ia water tight shipping containers in accordance with PPP-(2-301 for shipment from the supply source to the first receiving activity for immediate use. Containers shall. comply with Consolidated Freight Classific

33、ation Rules or other common carrier regulations applicable eo the mode of transportation. (See 6.1). 5.2 Marking. In addttion to any special marking specified, shipping containers shall be marked in accordance with MIL-STD-129. Each container shall be marked on the upper two-thirds of one surface as

34、 follows: Contains Lead Thiocyanate Toxic if inhaled or ingested Use only in well ventilated area Fine particles form explosive mixtures with air Products of combustion are highly toxic Fir fighting - Use water, wear self-contained breathing Store in cool, dry place, away from oxidizing agents. appa

35、 ra tus 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIb-L-6SA 6, NOTES 6.1 Procurement documente should apecify the following: (a) Title, number anci date of this speclfieatioa. (b) Size and type o shipping container (c) Weight of lead thitxyci

36、nate to be packed in a ihipping (d) Level of packaging and packing desired. conciiinerci 6.1.1 Gritera for um of proper level of packaging and pseking shall be a6 Eollowe: For Level A - This level shall be used for those itemri which rire to be ehipped to indeterminate destinations or stored under i

37、ndeteminete conditisna for redistribution anywhere known chat the item will be held in covered storage in oversea6 location8 for 6 monthe 01: lee8 sr domestic locations for an indefinite period, - For Level 13 - mie level shalt be usedoaly when It is definitely For level C - Thie level shall be used

38、 oiy when it: is definitely !;aswu that: the packaged item it; to be shipped te domestic instalLsttons for irnadiate uee at: the Eiret receiving activity. Preparing activity: Array MU Project; Nor 6810-0774 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-