1、 MIL-DTL-85470B15 June 1999SUPERSEDINGMIL-I-85470A8 August 1990DETAIL SPECIFICATIONINHIBITOR, ICING, FUEL SYSTEM, HIGH FLASHNATO CODE NUMBER S-1745This specification is approved for use by all Departments and Agencies of the Department ofDefense.1. SCOPE1.1 Scope . This specification covers the requ
2、irements for one type and grade of a high flash,fuel system icing inhibitor soluble in aircraft turbine engine fuel. This inhibitor is primarilycomposed of diethylene glycol monomethyl ether and is commonly referred to as DiEGME.2. APPLICABLE DOCUMENTS2.1 General . The documents listed in this secti
3、on are specified in sections 3 and 4 of thisspecification. This section does not include documents cited in other sections of this specificationor recommend for additional information or as examples. While every effort has been made toensure the completeness of this list, document users are cautione
4、d that they must meet allspecified requirements documents cited in sections 3 and 4 of this specification, whether or notthey are listed.2.2 Government documents .Beneficial comments (recommendations, additions, deletions) and any pertinent data which maybe of use in improving this document should b
5、e addressed to: Naval Air Systems Command,Fuels and Lubricants Division, AIR-4.4.5, Bldg. 2360, PSEF Building 22229 Elmer Road,Unit 4, Patuxent River, MD 20670-1534, by using the Standardization Document ImprovementProposal (DD Form 1426) appearing at the end of this document or by letter.AMSC N/ A
6、FSC 6850DISTRIBUTION STATEMENT A . Approved for public release; distribution is unlimited.METRICProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-85470B22.2.1 Standards . The following standards form a part of this document to the extentspecifi
7、ed herein. Unless otherwise specified, the issues of these documents are those listed in theissue of the Department of Defense Index of Specifications and Standards (DoDISS) andsupplement thereto, cited in the solicitation (see 6.2).STANDARDSFEDERALFED-STD-791 - Lubricant, Liquid Fuel and Related Pr
8、oducts, Methods ofTesting(Unle ss otherwise indicated, copies of the above standards are available from theStandardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA19111-5094.)2.3 Non-Government publications . The following documents form a part of this documentto the ex
9、tent cited herein. Unless otherwise specified, the issues of the documents which are DoDadopted are those listed in the issue of the DoDISS specified in the solicitation. Unless otherwisespecified, the issues of documents not listed in the DoDISS are the issues of the documents citedin the solicitat
10、ion (see 6.2).AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)ASTM-D56 - Flash Point by Tag Closed Tester (DoD adopted), StandardTest Method forASTM-D93 - Flash Point by Pensky Martens Closed Tester (DoD adopted),Standard Test Method forASTM-D891 - Specific Gravity, Apparent, of Liquid Industrial C
11、hemicals,Standard Test Method forASTM-D1078 - Distillation Range of Volatile Organic Liquids (DoD adop ted),Standard Test Method forASTM-D1209 - Color of Clear Liquids (Platinum- Colbalt Scale) (DoDadopted), Standard Test Method forASTM-D1364 - Water in Volatile Solvents (Fischer Reagent Titration M
12、ethod)(DoD adopted), Standard Test Method forASTM-D1613 - Acidity in Volatile Solvents and Chemical Intermediates Usedin Paint, Varnish, Lacquer, and Related Products (DoDadopted), Standard Test Method forASTM-D3828 - Flash Point by Setaflash Closed Tester (DoD adopted ),Standard Test Method forProv
13、ided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-85470B3ASTM-D4052 - Density of Liquids by Digital Density Meter (DoD adopted),Standard Test Method forASTM-D4171 - Fuel System Icing Inhibitors, Standard Specification forASTM-E29 - Practice for Usi
14、ng Significant Digits in Test Data toDetermine Conformance with Specifications (DoD adopted)ASTM-E70 - pH of Aqueous Solutions with the Glass Electrode (DoDadopted), Standard Test Method forASTM-E203 - Water Using Karl Fischer Reagent (DoD adopte d), StandardTest Method forASTM-E300 - Sampling Indus
15、trial Chemicals, Standard Practice forASTM-E450 - Measurement of Color of Low -Colored Clear Liquids UsingHunterlab Color Difference Meter, Standard Test Method for(Application fo r copies should be addressed to the American Society for Testing andMaterials, 100 Barr Harbor Drive, West Conshohocken,
16、 PA 19428-2959.)2.4 Order of precedence . In the event of a conflict between the text of this document andthe references cited herein, the text of this document takes precedence. Nothing in this document,however, supersedes applicable laws and regulations unless a specified exemption has beenobtaine
17、d.3. REQUIREMENTS3.1 Materials . The inhibitor shall be composed entirely of diethylene glycol monomethylether except that an antioxidant specified in 3.2 shall be added at a concentration from 50 to 150parts per million by weight. The antioxidant shall be added immediately after processing andbefor
18、e the inhibitor is exposed to the atmosphere. The inhibitor shall conform to the requirementsof table I when tested in accordance with section 4.3.2 Antioxidants . The antioxidant added to the inhibitor shall be one of the following:a. 2,6 ditertiary butyl, 4 -methylphenolb. 2,4 dimethyl, 6 -tertiar
19、y butylphenolc. 2,6 ditertiary butylphenold. Mixed tertiary butylphenol composition:75 percent, minimum, 2,6 ditertiary butylphenol25 percent, maximum, tertiary and tritertiary butylphenolsProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-85470
20、B4TABLE I. Properties of the inhibitor and test methods .Property Limit Test MethodAcid number, mg KOH per gram (maximum) 0.09 ASTM-D1613Color, platinum cobalt (maximum) 10 ASTM-D1209 1 / orASTM-E450Distillation:Initial point, minimumDry point, maximum191.0198.0ASTM-D1078Ethylene glycol(maximum, per
21、cent by weight)0.5 2 /pH of 25 percent solution in water(25+/- 2 O C)5.5 to 7.5 ASTM-E70 3 /Relative density(20/20 O C) 1.021 to 1.025 ASTM-D891 1 / 4 / orASTM-D4052Water (maximum, mass %) 0.1 ASTM-D1364 1 / ,ASTM-E1064 orASTM-E203Flash point, O C ( O F) (minimum) 85 (185) ASTM-D93 1 / ,ASTM-D56, or
22、ASTM-D3828Notes: 1 / Referee Test Method2 / See 4.7.1.13 / See 4.7.1.24 / ASTM-D891 Method A or B3.3 Workmanship . The inhibitor shall be uniform in quality, clear and bright, and free fromsuspended and foreign matter (see 4.5.1).3.4 Precautionary markings . The following precautionary marking shall
23、 be included oncontainers of this product:“TO BE USED ONLY AS AN ANTI -ICING ADDITIVEFOR AIRCRAFT TURBINE ENGINE FUELS“Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-85470B54. VERIFICATION4.1 Classification of inspections . The inspection re
24、quirements specified herein are classifiedas conformance inspection.4.2 Inspection lot .4.2.1 Bulk lot . A bulk lot shall consist of an indefinite quantity of a homogeneous mixtureof material offered for acceptance in a single isolated container; or manufactured by a single plantrun (not exceeding 2
25、4 hours) through the same processing equipment, with no change iningredient material.4.2.2 Packaged lot . A packaged lot shall consist of an indefinite number of 208 liter(55 gallon) drums or smaller unit packages of identical size and type, offered for acceptance, andfilled with an homogeneous mixt
26、ure from one isolated container, or filled with an homogeneousmixture of material manufactured by a single plant run (not exceeding 24 hours) through the sameprocessing equipment, with no change in ingredient material.4.3 Inspection . Inspection shall be in accordance with FED-STD-791, Method 9601.4
27、.3.1 Inspection conditions . Requirements contained in table I are absolute, as defined inASTM-E29, and shall not be subject to correction for test tolerances. If multiple determinationsare made, results falling within any specified repeatability and reproducibility tolerance may beaveraged. For rou
28、nding off of significant figures, ASTM-E29 shall apply to all tests required bythis specification.4.4 Sampling .4.4.1 Sampling of inhibitor . Each bulk or packaged lot shall be sampled in accordance withASTM-E300. The samples shall be subjected to the examination of inhibitor specified in 4.5.1and t
29、ested per 4.7.4.4.2 Sampling for inspection of filled containers . A random sample of filled containers shallbe selected from each lot. The sample containers shall be subjected to the examination of filledcontainers as specified in 4.5.2.4.5 Examinations .4.5.1 Examination of inhibitor . Samples sel
30、ected in accordance with 4.4.1 shall be visuallyexamined for compliance with 3.3.4.5.2 Examination of filled containers . Each container selected shall be examined for defectsof the container and closure, for evidence of leakage, for markings specified in 3.4 and all otherProvided by IHSNot for Resa
31、leNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-85470B6packaging requirements. Each filled container shall also be weighed to determine the amount ofcontents. Any container in the sample having one or more defects or under the required fill shallbe rejected.4.5.3 Exami
32、nation of empty containers . Containers shall not contain any foreign materialsuch as solids, corrosion products, water, or other sediments. Container seams shall be inspectedfor evidence of metal corrosion, flux, solder and such materials as would contaminate the product.Any container not meeting t
33、hese criteria shall be rejected.4.6 Rejection . Failure of any sample of the inhibitor to conform to any one of therequirements to this specification shall be cause for rejection of the lot represented.4.7 Test methods .4.7.1 Inhibitor properties . The inhibitor properties shall be tested in accorda
34、nce with theASTM test methods listed in table I and as specified in 4.7.1.1 through 4.7.1.2.4.7.1.1 Ethylene glycol (percent by weight) . The percent of ethylene glycol component inthe diethylene glycol monomethyl ether shall be determined as specified in subparagraphs4.7.1.1.1, 4.7.1.1.2, and 4.7.1
35、.1.3 (titration method) or ASTM-D4171 Annex A1 Test Method forDetermining Purity of Fuel System Icing Inhibitors Using Ultra High Purity Ethylene GlycolMonomethyl Ether (anhydrous, 99.5+%) as the calibration standard for the analysis of diethyleneglycol monomethyl ether.4.7.1.1.1 Reagents and materi
36、als . Unless otherwise indicated, all reagents shall be AmericanChemical Society reagent grade or equivalent. Reference to water indicates distilled or deionizedwater. The following materials shall be prepared:a. Oxidizing reagents : To a solution containing 5 grams of periodic acid (HIO 4 ) or5.9 g
37、rams of paraperiodic acid (HIO 4 2H 2 O) in 200 milliliters (ml) of water, add 800 ml ofglacial acetic acid. Store the solution in a dark, well-stoppered bottle.b. Potassium iodide : Twenty percent aqueous solution. Weigh out 20 grams of potassiumiodide and dilute to 100 ml with distilled water.c. S
38、odium thiosulfate, standard 0.2N : Standardize weekly or before using by an acceptedprocedure.d. Starch indicator solution : One percent aqueous.4.7.1.1.2 Procedure . The following procedure shall be performed:Provided by IHSNot for ResaleNo reproduction or networking permitted without license from
39、IHS-,-,-MIL-DTL-85470B7a. Pipette 100 ml of the oxidizing reagent into each of four 500 ml iodine flasks. Reservetwo of the flasks for the blank determination.b. Introduce 15 grams of the sample, weighed to the nearest 0.1 gram, into each of twoflasks and swirl to effect solution.c. Allow the flasks
40、 to stand for 30 minutes at room temperature.d. While swirling, add 20 ml of 20 percent potassium iodide solution to each flask, in turn,immediately before titrating.e. Titrate the contents of each flask t o a pale yellow color with standard 0.2N sodiumthiosulfate. Add 2 ml of starch indicator and t
41、itrate to the disappearance of the blue color.f. If the net titration is more than 20 ml, repeat the determination, using a smaller samplesize.4.7.1.1.3 Calculations . Calculate the concentration of ethylene glycol as:Weight percent ethylene glycol = (B -A) x N x 3.103( s)Where: A = ml of sodium thi
42、osulfate required for the sample.B = average ml of sodium thiosulfate required for the blank.N = normality of sodium thiosulfate.s = grams of sample.4.7.1.2 pH of 25 percent solution in water . Twenty -five ml of the inhibitor shall be pipettedinto a 100 ml volumetric flask and filled with freshly b
43、oiled and cooled distilled water having a pHof 6.5 to 7.5. The pH value shall be measured with a pH meter calibrated in accordance withASTM-E70. To avoid error caused by carbon dioxide in the air, the gas space over the solutionshall be purged with carbon dioxide-free air.5. PACKAGING5.1 Packaging .
44、 For acquisition purposes, the packaging requirements shall be as specified inthe contract or order (see 6.2). When actual packaging of materiel is to be performed by DoDpersonnel, these personnel need to contact the responsible packaging activity to ascertain requisitepackaging requirements. Packag
45、ing requirements are maintained by Inventory Control Pointspackaging activity within the Military Department or Defense Agency, or within the MilitaryProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-85470B8Departments System Command. Packaging
46、 data retrieval is available from the managing MilitaryDepartments or Defense Agencys automated packaging files, CD-ROM products, or bycontacting the responsible packaging activity.6. NOTES(This section contains information of a general or explanatory nature that is helpful, but notmandatory.)6.1 In
47、tended use . The inhibitor is intended for use as an anti -icing agent to be added tomilitary aircraft turbine engine fuels. The requirements defining the product covered by thisspecification are needed for the unique operating environment of military aircraft and are notidentical to similar commerc
48、ial specifications. Products defined by commercial specifications withthe same chemical name are only acceptable for use in military equipment if they meet all of therequirements of this specification. The military is the only entity actively pursuing thedevelopment of environmentally friendly anti
49、-icing agents. This specification will be used as aplatform to define the requirements of future environmentally friendly anti -ic ing agents.6.2 Acquisition requirements . Acquisition documents should specify the following:a. Title, number, and date of this specification.b. FSII - DiEGME.c. Issue of DoDISS to be cited in the solicitation, and if required, the specific issue ofindividual documents referenced (see 2.2.1 and 2.3).d.
