1、I o MIL-L3055CAMENDMENT 119 MARCH 1993MILITARYSPECIFICATIONLEAD AZIDEThis amendment forms a pal of Military Specification MIL-L3055C, dated12 January 1993, and is approved for use by all Departments and Agencies of theDepartment of Defense.The attached insertable replacement pages listed below are r
2、eplacements forstipulated pages. When the new pages have been entered in the document, inseri theamendment as the cover sheet to the specification.a71I7 Reprinted without changea7118 18a71indicates specific pages revised by this Amendment.oCustodian:Army (AR)Review activitiesNavy - OSPreparing activ
3、ity:Army (AR)Project numbec1376-04650 AMSC N/A Iofl FSC 1376ENT A. Approved for public refease; Distribution is unlimited.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-n MIL-L-3055Co4.5.1 Preparation of drv samDle. Transfer a portion ofabout 25 gms
4、 of the wet sample obtained in 4.4.3.1 to a Buchnerfunnel fitted with a medium porosity filter paper. Aspirate thesample and retain the water collected for the PH determination in4.5.6. Dry the sample in an oven maintained at 70-75C forapproximately two hours or until constant weiht is obtained.Use
5、this dry sample for the following determinations unlessotherwise specified.4.5.2 . Remove a sufficient quantity of sample (forcolor and dimension) from a well stirred slurry of lead azideobtained in 4.4.3.1 and spread over an area of four sq. cm. on aglass microscope slide. Allow to air dry. Under r
6、eflectedlight, examine the material on the slide for color and impuritiesusing a magnification of approximately 300 times (300X).4.5.3 Dimension. (for Type I only). Examine the slideprepared in 4.5.2 using a minimum magnification of 150 times andreflected light for presence of needle shaped crystals
7、. Measurethe longest dimension of the crystal with the aid of a mechanicalstage. For this examination, use transmitted and reflected lightand an ocular micrometer which has been calibrated by means ofthe stage micrometer. Consider the longest dimension to be thedistance between the two most remote p
8、oints of any one crystal.A minimum of 100 crystals shall be examined.4.5.4 Particle size. (for Type II only).4.5.4.1 Preparation of sample. Transfer approximately onegm of sample slurry obtained in 4.4.3.1 to a filtering crucibleof very fine porosity (Selas Number 3001 or equivalent) . Washthe speci
9、men with three 20 mL portions of ethyl alcohol.Aspirate the washed sample until the odor of alcohol can nolonger be detected. Use this sample for the particle sizedetermination.4.5.4.2 Procedure. Determine the particle size usingMethod 206.1 of MIL-STD-650.4.5.5. Puritv.4.5.5.1 Procedure. Determine
10、purity of the lead azide bymeasuring the nitrogen gas evolved using Method 407.1, MIL-STD-650 (Audiometer method).4.5.5.2 Alternate method.4.5.5.2.1 ADO aratus. Assemble the apparatus shown inFigure 1 or equal. Gas burette (A) and leveling bulb (B) areofilled with water saturated with nitrogen gas.
11、The circulation17Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL - L - 3055CL7A. Wafer iacke!ed SW mL Gas burelle, PyrxB. Leveling bulb, filled wilh nivon.salura18d water, Pyrexc, Water circulating pump0. Waler iackeled 3C0 mL readon !lask, Pyrex
12、E Sampla insetion port. 910und glass !aperedF. Throo.way stop cock, position shown cbsed 10 aunospheraG. Waler iackele+ 3W mL C02 absorption flask, pyre.mSAMPLE CUPOametec 14mmH. 50 mL burette Height 18mmJ. Thermometer Ma:e. as: Pyrex glassK. Sample holderL. AII connections flexible smafl bore iubmg, such a8 TygonFIGURE 1. APPARATUS TO DETERMINE NITROGEN GAS EVOLUTION18Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
