1、I MIL-L-4876b (2) 68 m 7777706 OL2L2L7 3 m MIL-L-48766 (AR) AMENDMENT 2 AMENDMENT 1 25 September 1978 MILITARY SPECIFICATION LITHIUM TETRAFLUOROBORATE (FOR USE IN AMMUNITION) This Amendment forms a part of Military Specification MIL-L-48766 (AR) dated 19 June 1975. Page 1 Delete “(PA)“ wherever it a
2、ppears and substitute (AR)“. Delete the Preamble and substitute the following: “This specification approved for use by the US Army Armament Research and Development Command and *is available for use by all Departments and Agencies of the Department of Defense“. i Page 2 Para. 3.1.2. X-ray diffractio
3、n. Add “(see 3.1.3)“. Para. 3.1.3. Infrared Spectroscopy. Add the following: “This requirement may be used as an alternate to x-ray diffraction requirement given in 3.1.2.“ I Page 3 Para 3.1.4. Impurities. Delete the last sentence in the paragraph. Delete Table III in its entirety and substitute the
4、 following Table III. - Table III“ II Impurities Maximum Allowable Concentration, pp m Total Halogens 50 Water (see 6.7) 500 Test Paragraph 4.4.3.6 4.4.3.11“ FSC: 6810 iis QCUMENT CONTAINS ,-&- PAGES, Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-9
5、 MIL-L-48766 (AR) AMENDMENT 2 Para 3.1.5 Pro erties delete the Table appearing in this paragraph in + ts entirety and substitute the following Table IV. Table IV Property Requirement Paragraph PH Test t z2.0 to 7.0 4.4.3.12 Solubility in MF, %, min. 97.0 4.4 -3.13 Hydrolysis/Dehdration 4.4.3.14 in w
6、ater in Methyl Formate (MF) C2.5 to 7.0 Methanol, % max at 2OOhrs 12 at 200 hrs 0.1 Dimethyl ether, % max Page 5 Para. 4.4.2 Testin Add the following to the end of the sentence. conditions. “At 4 a Re ative Humidity not to exceed 4% at ambient Para. 4.4.2.1 Make the following changes to this paragra
7、ph: 1st Sentence: change “1 pound“ to “100 9“. 2nd Sentence: add the following statement: “or the samples from each batch that is combined into a shipping lot shall be subjected to the tests listed below in accordance with MIL-STD-105, Level II. Table: Delete Table given and substitute the following
8、 Table V, Table V Inspection/Requirement Defect Classification Form & Color (see 3.1.1) X-ray Diffraction (see 3.1.2) or Infra-red Spectroscopy .(see 3.1.3) Total Halogens (see 3.1.4) Water (see 3.1.4) pH (see 3.1.5) Solubility in MF (see 3.1.5) Hydrolysis/Dehydration (see 3 . 1 . 5) (Al ter nate Me
9、t hod) Page 2 of 4 Major Major Major Major Major Major Major Major Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- 4 MIL-L-48766 (2) 68 9779706 OL2122L I = MIL-L-48766 (AR) AMENDMENT 2 Paragraphs 4.403.4, 4.4.3.5, 4.4.3.7: 4.4.3.8, 4.4.3.9: 4.4.3.16
10、, and 404.3,15 - elete these paragraphs in their entitety. Page 7 4.4.3.6 usent delete in it6 entirety and substitute the + “4.4.3.6 Total Hal oqene. Determine the halogens present in follow i ng I the compound by uae of a standard analytical technique for total halogen6 which has prior approval. (s
11、ee 6.8). Pata, 4.4.3.11 Water. To end of sentence add “(see 6.7).* Para. 4.4.2.12 a. Change “4.4.2.12“ to 4.4.3.12.“ Delete this paragraph in its entirety and substitute the following: WPara. 4.4.3.12 M. Prepare a 1 Molar solution of the friBF4 by dissolving 93.75g of the sample in a liter of boiled
12、 dfstille water, having a pH between 6 and 7: and determine the = pH of the resultant solutlon in accordance with method given in ASTM-E7O. Smaller solutions may he prepared with respective corresponding weight volumes of material reduced accordingly. In addition, prepare a 2 Molar solution of the L
13、iBFq by dissolving 187.5g of 88313 le in a liter of Methyl Formate. Quantitatively transfer 1 001 volumetric flask and dilute to the mark with boiled distilled water, having a pH between 6 and method given in ASTM-E70. The pH measurement should be taken immediately following preparation of the solut
14、ion I with ireadings taken between 1 and 3 minutes following preparation.“ , ! I 7. Determine the pH of this solution in accordance with the : Page 8 Para. 4.4.3.13 Solubilitv in Methyl Formate. At the end of the 1st sentence add the following: “Smaller solutions may be prepared with respective corr
15、esponding weights/volumes of material reduce8 accordingly:“ Page 3 of 4- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-487bb (2) b W 77779Ob OL2L222 3 MIL-L-48766 (AR) AMENDMENT 2 Page 9 Add a new paragraph. Para 6.7 If the lot of lithium tet
16、rafluoroborate fails to meet the water requirement specified in 3.1.4 the lot of lithium tetrafluoroborate may be reprocessed by vacuum baking at 80% + 5% and then retested in accordance with 4.3.4.11.“ - Add a new paragraph. “Para 6.8 - the method used to determine the requirement should be submitt
17、ed to DRDAR-QAR-R thru the Contracting Officer for prior approval. “The margins of this amendment are marked with an asterisk to indicate where changes (additions, modification, corrections, deletions) from the previous amendment were made. This was done as a convenience only and the Government assu
18、mes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relationship to the last previous amendment .I C us tod i an : Ar my-AR Preparing Activity: Project No. 6810-ABO3 Army-AR Page 4 of 4 *US. GOVERNMENT PRINTING OFFICE: 1980-603-121/985 I I * .-. . -. , I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
