ARMY MIL-D-3994 C-1982 DEXTRIN TECHNICAL《工业硫酸技术》.pdf

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1、UU-S-48 - Sacks, Shipping, Paper STANDARDS MILITARY 1 MIL-STD-105 MIL-STD-129 2 Sampling. 4.2.2.1 For examination of packaging. Sampling shall be conducted in accord- ance with MIL-STD-105. 4.2.2.2 For dextrin test. Sampling shall be conducted in accordance with table II. tainer labeled to identify

2、the lot and container from which it was taken. A representative specimen of approximately 1/2 pound shall be , removed from each sample container and placed in a suitable clean, dry con- TABLE II. Sampling for dextrin test : Number of containers in batch or lot : Number of sample containers : 2 to 2

3、5 2 . 26 to 150 3 . 1,201 to 7,000 8 . m. c I : 151 to 1,200 5 7,001 to 20,000 . 10 Over 20;-000 20 P 4.2.2.3 For container leakage test. Sampling shall be conducted in accordance with MIL-STD-105. 4.2.3 Inspection procedure. 4.2.3.1 For examination of packaging. The sample unit shall be one filled

4、unit or shipping container, as applicable, ready for shipment. Sample unit and shipping containers shall be examined for the following defects using an AQL of 2.5 percent defect ive : 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-D-3994C (a)

5、Contents per container not as specified (b) Container not as specified (c) Container closure not as specified (d) Container damaged or leaking (e) Marking incorrect, missing, or illegible (e) Unitization not as specified 4.2.3.2 For test. Approximately equal portions of all of the specimens taken in

6、 4.2*2.2 shall be thoroughly mixed to form a composited specimen of no less than 1 pound. 4.2*4. Each test shall be conducted in duplicate analysis. Failure of either analysis of any test shall be cause for rejection of the lot represented. 4.2.3.3 For container leakage test. The sample unit shall b

7、e one container. The sample containers selected in 4.2.2.3 shall be tested as specified in 4.2.5 usng an AQL of 1.5 percent defective. The composited specimen shall be tested as specified in I 4.2.4 - Tests. Water in accordance with ASTM D1193, type as applicable, and reagent grade chemicals shall b

8、e used throughout the tests. blank determinations shall be run and corrections applied where significant. Tests shall be conducted as follows: Where applicable, 4.2.4.1 Particle size. Determine the particle size of the specimen in accordance with AS“M D1921, using a tared No. 80 sieve. 4e2.4.2 Uncom

9、bined water. Weigh to the nearest 0.01 gram (8) approximately 12 g of the specimen into a suitable tared dsh and dry at 105“ =t 3C for 4 hours. uncombined water as follows: Cool to room temperature in a desiccator and reweigh. Calculate the 100 (A - B) W Percent uncombined water = where: A = Weight

10、in grams of the dish and contents before drying, B = ifeight in grams of the dish and contents after drying, and W = Weight in grams of specimen. Retain the residue for use in the water-insoluble matter test in 4.2.4.4. 4.2.4*3 - Ash. specimen into a tared silica or platihum crucible. the ash is whi

11、te. late the percent ash as follows: Weigh to the nearest milligram approximately 5 g ofthe Cool to room temperature in a desiccator and rewigh. Ignite at 600“ + 10C until Calcu- Percent ash c 100 (A - B) W where: A = Weight: in grams of the crucible and ash, B = Tare weight in grams 6f the crucible

12、, and W = Weight; in grams of the specimen. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-L - MIL-D-3774C 68 m 777770b OLL4464 3 m MIL-D-3994C 4.2.4.4 Water-insoluble matter. Quantitatively wash the residue retained from 4.2.4.2 into a 250-millil

13、iter (mi) beaker using 100 ml of hot (60“ + 5C) water. Stir until complete solution is effected, filter through a tared-filter crucible using suction, and wash with 90 ml of hot water. Heat the residue in the-crucible at 105“ + 3C for 4 hours. Cool and weigh. Calculate the percent water-insoluble ma

14、tter as follows: 100 (A - B) W Percent wat er-insoluble matt er = where: A = Weight in grams of crucible and residue, B = Tare weight in grams of crucible, and W = Weight in grams of the specimen taken in 4.2.4.2 before drying. m 4.2.4.5 Acidity (as acetic acid). gram approximately 6 g of the specim

15、en. solution is effected. (Ignore small quantities of insoluble matter that may be present.) sodium hydroxide solution until the first pink color that persists for 30 seconds is produced. Perform a blank determination on 100 ml of the same water used to prepare the specimen solution. Calculate the a

16、cidity as follows: Weigh into a flask to the nearest milli- Add 100 mi of water and stir until 9 Add a few drops of phenolphthalein indicator and titrate with O.1N - . 6N (A - B) W Percent acidity = where: N = Normality of the sodium hydroxide solution, A = Milliliters of sodium hydroxide solution u

17、sed to titrate the B = Milliliters of sodium hydroxide solution used to titrate the blank, W = Weight in grams of specimen. specimen , * and a 4.2.4.6 Reducing sugars (as dextrose). (a) Cupric sulfate solution. Dissolve 34.64 g of crystalline cupric sulfate pentahydrate -in water to make 500 ml. (b)

18、 Alkaline tartrate solution. Dissolve 173 g of potassium sodium tartrate tetrahydrate and 50 g of sodium hydroxide in water to make 500 ml. (c) Procedure. Weigh 2.00 g of the specimen into a beaker. Add approximately 75 ml of water and shake for 10 minutes. Filter until the fil- trate is clear. Dilu

19、te the filtrate with water to make 100 ml of solution. Mix equal volumes of the cupric sulfate solut5on prepared as specified in (a) and the alkaline tartrate solution prepared as specified in (b). the resulting solution to 50 ml of the specimen filtrate and boil for 3 min- utes. Filter through a ta

20、red filter crucible. Wash the precipitate, first with water, then with alcohol, and finally with ether. Dry at 105“ - + 3OC to Add 50 ml of n 0 5 a. i Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-D-3994C b L. I i constant weight, g. men*) The

21、weight of the precipitate shall be no greater than 0.0925 (This is equivalent to 4 percent by weight of dextrose in the 2.00 g speci- 4.2.5 Container leakage test. positions, and leave it in each for a period of 15 minutes: Place the container in each of the following (a) Upright (b) Upside down (c)

22、 On one side (d) On other side Examine the container after each period for any evidence of leakage. 5. PACKAGING 5.1 Unit packing. Dextrin shall be unit packed level B or industrial as specified (see 6.2). 5.1*1 Level B. A quantity of 50 (-1-0.50 or -0) pounds (lb) of dextrin shall be unit packed in

23、 a sack conforming to type III or IV style B, sack construc- tion number 5 or 5X MB grade 2 o UV-S-48. ance with the applicable requirements of OU-s-48 There shall be no evidence of leakage of dextrin from the sack when tested as specified in 4.2.5. The sack shall be closed in accord- 5.1*2 Industri

24、al* A quantity of SO (+0.50 or -0) lb of dextrin shall be unit packed induct rially in accordance with %IL-STD-1188. 5.2 Packing. Packing shall be level B or industrial as specified (see 6.2). 5.2.1 Level B. Dextrin, unit packed level B as specified in 5.1.1, shall require no E urther protect ion fo

25、r shipment other than unit izat ion. 5.2.2 Industrial. Dextrin shall be packed industrially in accordance with MIL-STD-1188. 5.2.3 Unitization. A uniform quantity of level B packs of dextrin shall be palletized in accordance with the applicable requirements for load type XV, using a fiberboard cap,

26、bonding by shrink-wrap, stretch wrap, or combined bond- ing means K and L of MIL-STD-147. Industrial packs shall be unitized in a supply source to the first destination, short term storage not exceeding 6 months, and acceptance by common carrier. manner to assure protection of packs and contents dur

27、ing transport from the I. 5.3 Marking. Level B containers shall be marked in accordance with MIL-STD-129. with MIL-STD-1188* Each container shall be marked to show lot or batch number and date o manufacture of the dextrin, Industrial unir packs and packs shall be marked in accordance 6 Provided by I

28、HSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-f- MIL-D-399qC 68 m 9999906 OL14qbb 7 m MIL-D-3 9 9 4C 6. NOTES 6.1 Intended use. primary explosive mixtures. Dextrin is intended for use in pyrotechnic mixtures and r 6.2 Ordering data. Acquisition documents should

29、 specify the following: (a) Title, number, and date of this specification. (b) Level of unit packing and packing required (see 5.1 and 5.2). 6.3 Batch. A batch is defined as that quantity of material which has been manufactured by some unit chemical process or subjected to some physical mixing opera

30、t ion intended to make the final product subst ant ially unif oh. v. 6.4 Significant places. For the purpose of determining conformance with this specification, an observed or calculated value should be rounded off “to the nearest unit“ in the last right-hand place of figures used in expressing the

31、limiting value, in accordance .with the rounding-off method of ASTM E29. Cust odian : Preparing act ivit y : Army - EA Navy - AS Army - EA e Project No. 6810-B326 Review activities : Army - AR, MD Navy - OS DLA - GS R 4 *US. WVERNMENT PRINTING OFFICE 1982-665-034/5041 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-