ARMY JAN-C-263-1945 CALCIUM STEARATE《硬脂酸钙》.pdf
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1、JAN-C-263 68 777770b 0333638 T /- y JAN=C=263 28 SEPTEMBER 1945 JOINT ARMY-NAVY SPECJFICATION CALCIUM STEARATE Amy Number 50-1 1-133 Navy Number 51 Cfl mia apedfieation waa approved by the War Department and the Navy Department for nse of procurement. services of the Army and the Navy. A. APPLICABLE
2、 SPECIFICATIONS A-1. The following specifications of e issue in effect on date of invitation for bids, form a part of thia specification : U. S. bBMp SPECIFICATIONS arm Ammunition? tractors. 5-lanera1 Specification for Ammunition except SmaU 1W-Standard specification for Marking Shipments by Con- NA
3、VY DIOPBB!FMBWJ! f3PECIMCATION General Specifications for Inspection of Material. FEDEiR4L SPECIFICATION BB-S-3G6-Sievea ; Standard, TesHng. B. OWE B-l. This specification covers one grade of calcium stearate as here- inafter specilkaliiri)y.-Eii:uisIfy a .ouglily. Ailow tlie water to separate and t
4、raiisfer it to a beaker. Add a frw drops of pheiiolphthniein iiitiiattor aiid note if mineral nk:ilinity is absent ns iiitiic*ated by failure of the soluliori to turn pink. If tile solutioii is not .alkaiiiie, add a few dropa of methyl red indivator and uote if mineral nciclity is absent as indicate
5、d by the solirtioii tiiriiiiig Wow in color. If the prwnce of mineral alkalinity or ucidity is tndicated, titrate the soliltiori with approxiniately N/10 acid or $11 thii jURt uimOiiiHCiii to Uil?tli1 red indicator with amuioiiiuin hy- I JAN-f!-2= (UO. 168) Provided by IHSNot for ResaleNo reproducti
6、on or networking permitted without license from IHS-,-,-JAN-C-263 68 m 7777706 OLL3621 T m 4 kalt and calculate to percentage of cslcium hydroxide or sulfuric acid in the sample. Fe. mt.-!Cransfer a 6-grn. portion of the sample to a platinum Wh and heat until nearly all the caronaceous matter is con
7、sumed. Add 10 ml. of Wprcent hydrochloric acid solution and heat gently. Dilute the solution with distilled water and filter, transferring the residue to the lter paper. Wash the residue with hot water. Dry the Blter paper and heat in the platinum dish until all carbonaceous matter is consumed. Tran
8、sfer the residue to a smooth glass slide and nib on the glass by exerting pressure with a smooth steel spatula blade. Note if particles of grit are present as indicated by lack of uni- formity of the material and the persistence of a scratching noise when pressing and rubbing of the material on the
9、glass plate is continued: T4g. CfrunuZution.-Superimpose a tared U. S. standard No. 10 sieve on a tared U. S. standard sieve No. 200. Place a 10-gm. por- tion of the sample in a beaker and wet thoroughly with water con- taining a wetting agent. Transfer the mixture to the No. 100 sieve and wash with
10、 water until no more material passes through the sieve. Remove the No. 100 sieve and wash any material held on the No. 200 sieve until no more material passes through it. Di7 the sieves at 100“ to 105“ O., cool, and weigh. From the weights of material held on the sieves, calculate the percentages of
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- ARMYJANC2631945CALCIUMSTEARATE 硬脂 PDF
