1、a* r, MIL-Z-29LG 9999906 1844290 934 MILITARY SPECIFICATI MIL-Z-291G 4 December 1993 SUPERSEDING 18 October 1984 MIL-Z-29 1F N ZINC OXIDE, TECHNICAL This specijcation is approved for use by all Departments and Agen- cies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers thr
2、ee grades and two classes of zinc oxide. 1.2 Classification. Zinc oxide shall be of the following grades and classes as specified (see 6.2): Grade A - Pyrotechnic mixture Class 1 - Regular grind Class 2 - Fine grind Grade B - Stabilizer for XXCC3 impregnite Class 1 - Regular grind Grade C - For use
3、as M864 propellant component Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, U.S. Army Chemical Research, Development and Engineering Center, ATTN: SMCCR-PET-S, Aberdeen Proving Groun
4、d, MD 2 1010-5423 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC N/A FSC 6810 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Licensed by Information Handling Services
5、MIL-Z-29LG D 9999906 3844293 870 D -9 MIL-Z-291 G 2. APPLICABLE DOCUMENTS. 2.1 Government specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these docu
6、ments are those listed in the issue of the Depart- ment of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). SPECIFICATIONS FEDERAL NN-P-7 1 UU-S-48 PPP-P-704 PPP-T-60 MILITARY MIL-B-117 STANDARDS FEDERAL - Pallets, Material Handling,
7、 Wood, Stringer Construction, - Sacks, Shipping, Paper - Pails, Metal: (Shipping, Steel, 1 Through 12 Gallons) - Tape: Packaging, Waterproof 2-Way and 4-Way (Partial) - Bags, Sleeves and Tubing FED-STD-313- Material Safety Data, Transportation Data and Disposal Data or Hazardous Materials Furnished
8、to Government Activities MILITARY MIL-STD-129 - Marking for Shipment and Storage MIL-STD-147 - Palietized Unit Loads MIL-STD-1168 - Ammunition Lot Numbering MIL-STD-1233 - Procedure for Determining Particle Size, Particle Size Distribution, and Packed Density of Powdered Materials (Unless otherwise
9、indicated, copies of federal and military specifications, standards, and handbooks are available from the Standardization Documents Order Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 191 11-5094.) 2 Licensed by Information Handling ServicesMIL-Z-29LG 9999906 1844292 707 MIL-Z-29 1 G 2.2 N
10、on-Government publications. The following documents form a part of this docu- ment to the extent specified herein. Unless otherwise specified, the issues of the documents which are DOD adopted are those listed in the issue of the DODISS cited in the solicitation. Unless otherwise specified, the issu
11、es of documents not listed in the DODISS are the issue of the documents cited in the solicitation (see 6.2). 0 ASTM STANDARDS D 1193 - Reagent Water D 1895 D 3280 - Analysis of White Zinc Pigments D 3951 - Commercial Packaging E 11 - Wire-Cloth Sieves for Testing Purposes E 200 E 300 - Sampling Indu
12、strial Chemicals - Apparent Density, Bulk Factor, and Pourability of Plastic Materials - Preparation, Standardization, and Storage of Standard Solutions for Chemical Analysis (Application for copies should be addressed to ASTM, 1916 Race Street, Philadelphia, PA 19103.) National Motor Freight Traffi
13、c Association, Inc., Agent “National Motor Freight Classification” (Application for copies should be addressed to the American Trucking Associations, Inc., Traffic Department, 1616 P Street, NW, Washington, DC 20036.) Uniform Classification Committee, Agent “Uniform Freight Classification” (Applicat
14、ion for copies should be addressed to the Uniform Classification Committee, Room 1106, 222 South Riverside Plaza, Chicago, IL 60606.) (Non-Government standards and other publications are normally available from the orga- nizations that prepare or distribute the documents. These documents also may be
15、 available in or through libraries or other informational services .) 2.3 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this docu- ment, however, supersedes applicable laws and
16、 regulations unless a specific exemption has been obtained. 3 Licensed by Information Handling ServicesMIL-Z-2LG N 0b 1844293 b43 N MIL-Z-29 1 G 3. REQUIREMENTS 3.1 Chemical characteristics. Zinc oxide shall conform to the applicable chemical charac- teristics of table I when tested as specified the
17、rein. TABLE I. Chemical characteristics Characteristic Assay (as ZnO), minimum Water soluble salts, maximum Lead Oxide (as PbO), maximum Loss in weight at llO“C, maximum Cadmium (as CdO), maximum Arsenic (as As 203), maximum Antimony (as Sb 203), maximum Chloride (as Cit), maximum Sulfur (as s03), m
18、aximum Sulfur (as SOJ), maximum 3.2 Particle size. Percent bv WE Grade A 98.5 0.50 0.60 0.30 0.20 0.10 0.10 - 0.40 - Grade B ;ht Grade C Test paragraph 4.2.4.1.1 4.2.4.1.2 4.2.4 1.3 4.2.4.1 .-I 4.2.4.1 .- 4.2.4.1.6 4.2.4.1.6 4.7.4.1.7 4.2.4.1 .S 4.2.4.1.8 3.2.1 Class 1. No less than 99.9 percent by
19、weight of class 1 zinc oxide shall pass thi-oiigh a 106-micrometer sieve and no less than 99.0 percent by weight shall pass through a 90-ni- crometer sieve when tested as specified in 4.2.4.1.9.1. 3.2.2 Class 2. Class 2 zinc oxide shall have an average particle size of no more than 5 micrometers whe
20、n tested as specified in 4.2.4.1.9.2. 3.2.3 Grade C. No less than 99.0 percent of grade C zinc oxide shall pass throiigh a U.S. Standard sieve No. 325, when tested as specified in 4.2.4.1.9.1. 3.3 Moisture reabsorption. Grade A zinc oxide shall reabsorb no more than 0.54 percent by weight moisture w
21、hen tested as specified in 4.2.4.1.10. 4 Licensed by Information Handling ServicesMIL-Z-291G D 9999906 1844294 58T MIL-Z-29 1 G 3.4 Apparent density. Grade A, class 1 zinc oxide shall have an apparent density of no less than 0.75 gram (g) per cubic centimeter when tested as specified in 4.2.4.1.11.
22、The zinc oxide shall meet the apparent density requirement as manufactured. The zinc oxide shall not be reworked after manufacture in order to meet this requirement. 3.5 Material Safety Data Sheets. Material Safety Data Sheets for zinc oxide shall be prepared and submitted by the contractor in accor
23、dance with FED-STD-313 (see 6.3). 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements (exami- nations and tests) as specified herein. Except a
24、s otherwise specified in the contract or pur- chase order, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Gov- ernment. The Government reserves the right to perform any of the inspections
25、set forth in this specification where such inspections are deemed necessary to ensure supplies and services conform to prescribed requirements. 4.1.1 Responsibility for compliance. All items shall meet all requirements of sections 3 and 5. The inspection set forth in this specification shall become
26、a part of the contractors overall inspection system or quality program. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of ensuring that all prod- ucts or supplies submitted to the Government for acceptance comply with all requir
27、ements of the contract. Sampling inspection, as part of manufacturing operations, is an acceptable prac- tice to ascertain conformance to requirements, however, this does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to accept def
28、ective material. 4.1.2 Contractor assurance of compliance. The contractors quality program or detailed inspection system shall provide assurance of compliance of all characteristics with the applica- ble drawing, special packaging instruction, and specification requirements using, as a mini- mum, th
29、e conformance criteria specified herein. 4.1.3 Alternative inspection provisions. Alternative inspection procedures, methods, or equipment, such as statistical process control, tool control, and other types of sampling proce- dures may be used by the contractor when they provide, as a minimum, the l
30、evel of quality assurance required by the inspection provisions specified herein. Prior to applying such alter- native procedures, methods, or equipment, the contractor shall describe them in a written proposal submitted to the Government for evaluation and approval. (See 6.4.) When required, the co
31、ntractor shall demonstrate that the effectiveness of each proposed alternative is equal to or better than the quality assurance provisions specified herein. In cases of dispute as to whether the contractors proposed alternative provides equal quality assurance, the provisions 5 Licensed by Informati
32、on Handling ServicesMIL-Z-291G 9999906 1844295 4Lb MIL-Z-29 1G of this specification shall apply. All approved alternative inspection provisions shall be specifi- cally incorporated into the contractors quality program or detailed inspection system, as applicable. 4.2 Quality conformance inspection.
33、 4.2.1 Lotting. A lot shall consist of the zinc oxide of one grade and class produced by one manufacturer, at one plant, from the same materials, and under essentially the same manufac- turing conditions, provided the operation is continuous. In the event the process is a batch operation, each batch
34、 shall constitute a lot (see 6.5). When specified (see 6.2), lot numbering shall be in accordance with MIL-STD-1168. 4.2.2 Sampling. 4.2.2.1 For examination of packaging. Sampling shall be conducted in accordance with table II. The sample unit shall be one filled unit pack or packing container, as a
35、pplicable. TABLE II. Sampling for packaging examination and test Number of containers in batch or lot 1 or 2 3 to 25 26 to 50 51 to 90 91 to 150 151 to 280 281 to 500 501 to 1,200 1,201 to 3,200 3,201 to 10,000 over 10,000 Number of sample containers all 3 5 6 7 10 11 i5 18 22 29 4.2.2.2 For zinc ox
36、ide test. See 6.6 for sampling and testing precautions. 4.2.2.2.1 Grades A and B. Sampling shall be conducted in accordance with table 111. A representative specimen of approximately 500 g shall be removed from each sample container and placed in a suitable clean, dry container labeled to identify t
37、he lot and container from which it was taken. . O O e 6 Licensed by Information Handling ServicesMIL-Z-29LG m 9999906 LB4429b 352 m MIL-Z-29 1G 4.2.2.2.2 Grade C. Sampling shall be conducted in accordance with table IV. A represen- tative specimen of approximately 500 g shall be removed from each sa
38、mple container in accordance with ASTM E 300-73 for solids and labeled to identify the lot and container from which it was taken. TABLE IV. Sampling for zinc oxide test grade C Number of containers in batch or lot1 Number of sample containers 1 or 2 3 to 100 101 to 200 201 to 300 301 to 500 501 to 1
39、,000 1,001 to 3,000 3,001 to 10,000 over 1 O. O00 all 2 5 8 10 13 20 32 40 4.2.2.3 For container leakage test. Sampling shall be conducted in accordance with table II. The sample unit shall be one filled unit pack or packing container, as applicable. 4.2.3 Inspection procedure. 4.2.3.1 For examinati
40、on of packaging. Sample unit packs and packing containers shall be examined for the characteristics listed below. Failure of any sample unit pack or packing container to conform to all characteristics shall be cause for rejection of the lot represented. (a) Contents per container (b) Container (c) C
41、ontainer closure Licensed by Information Handling ServicesMIL-Z-Z9LG m 9990b 1844297 299 m . . MIL-Z-29 1 G (d) Container free of damage (e) Unitization (f) Marking evident, correct, and legible 4.2.3.2 For zinc oxide test. (See 6.6 for sampling and testing precautions.) Each sample specimen taken i
42、n 4.2.2.2 shall be tested as specified in 4.2.4.1. Failure of any test by any specimen shall be cause for rejection of the lot represente. 4.2.3.3 For container leakage test. The sample containers selected in 4.2.2.3 shall be tested as specified in 4.2.4.2. Failure of any test by any sample unit pac
43、k or packing container shall be cause for rejection of the lot represented. 4.2.4 Tests. 4.2.4.1 Zinc oxide tests. Water in accordance with ASTM D 1193 and reagent grade chemicals shall be used throughout the tests. Where applicable, blank determinations shall be run and corrections applied where si
44、gnificant. Tests shall be conducted as follows: 4.2.4.1.1 Assay (as ZnO). Determine the percent by weight zinc oxide in accordance with the total zinc procedure for zinc oxide in ASTM D 3280, using diphenylamine as internal indicator. 4.2.4.1.2 Water-soluble salts. Determine the percent by weight wa
45、ter-soluble salts in the specimen in accordance with the water-soluble salts procedure for zinc oxide in ASTM D 3280. 4.2.4.1.3 Lead oxide. Determine the percent by weight lead oxide in the specimen in accordance with the total lead procedure of ASTM D 3280. 4.2.4.1.4 Loss in weight at 110C. Weigh t
46、o the nearest 0.1 milligram (mg) approximately 4 g of the specimen into a tared covered weighing dish weighed to the nearest 0.1 mg. Remove the cover and heat the dish and contents to constant weight in an oven at 110“ ? 2C. Replace the cover, cool to room temperature and weigh to the nearest 0.1 mg
47、. Calculate the percent loss in weight as follows: Percent loss in weight at 110C = 100 (A - B) W where A = weight of dish, cover, and specimen before heating in g, B = weight of dish, cover, and specimen after heating in g, W = weight of specimen in g. 4.2.4.1.5 Cadmium (as CdO). Weigh to the neare
48、st 0.01 g approximately 5 g of the specimen into a 400-milliliter (mL) beaker. Moisten with water, add 15 mL of concentrated 8 Licensed by Information Handling ServicesMIL-2-2916 9999906 I1844298 125 MIL-Z-291G hydrochloric acid, and evaporate to dryness. Cool, add 10 mL of concentrated sulfuric aci
49、d, and heat until sulfur trioxide fumes are expelled. Cool, add 150 mL of water, heat to boiling, and saturate with hydrogen sulfide, cooling the solution towards the end of the precipitation. Filter and wash with cold water. Discard the filtrate. Dissolve the precipitate into the original beaker with 1 to 2 hydrochloric acid and wash with hot water. Evaporate the filtrate almost to dryness, cool, add 10 mL of concentrated sulfuric acid, and heat to fumes of sulfur trioxide. Cool, add 150 mL of water, heat to boiling, and saturate with hydrogen sulfide as before
