1、MIL-G-5088 68 m 7777906 0323558 2 m Beneficial comments (recommendations , additions , deletions) and any pertinent data which may be of use in improving this document should be addressed to: (Commander, Naval Air Systems Command, Engineering Division, Standardization Section, Code: AIR-52021, Depar
2、tment of the Navy, Washington , D.C. 20361) by using the self -addressed Standardiza- tion Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. 1 3t/-73-+79 MIL-G-85088( AS) 1 March 1978 MILITARY SPECIFICATION GLYCERYL TRIRIC INOLEATE Thks specification is
3、 approved for use by the Naval Air Systems Command, Department of the Navy, and is available for use by all departments and agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers one grade of glyceryl triricino- leate. 2. APPLICABLE DOCUMENTS 2.1 Issues of documents, Th
4、e following documents of the issue in effect on the date of invitation for bids or request for proposal form a part of this specification to the extent specified herein. STANDARDS Military MIL-STD-129 Marking for Shipment and Storage MIL -S TD-414 Sampling Procedures and Tables for Inspection by Var
5、iables for Percent Defective PUBLICATIONS Naval Sea Systems Command (Code Ident 53711) OD 18869 Density of Liquids, Determination of OD 18879 Acid Number of Organic Materials, Determina- tion of Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-G-
6、85088 68 W 9979706 0323557 Li W MIL-G-85088( AS) OD 18882 Refractive Index of Liquids, Determination of OD 18893 Water Content, Determination of (Copies of specifications, standards, drawings, and publications required by contractors in connection with spec if ic procurement functions should be obta
7、ined from the procuring activity or as directed by the contract- ing officer. ) 2.2 Other publications. The following document forms a part of this specification to the extent specified herein. Unless otherwise indica- ted, the issue in effect on the date of invitation for bids shall apply, American
8、 Society for Testing and Materials (ASTM) D 1959 Iodine Value of Drying Oils and Fatty Acids (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race St, , Philadelphia, Pa. ) 3. REQUIREMENTS o 3.1 nish a sample for first article inspection and approva
9、l (see 4.4 and 6.3). First article. When specified (see 6.2), the contractor shall fur- 3.2 Chemical and physic& properties. The chemical and physical proper- ties of the glyceryl triricinoleate shall be in accordance with table I. TABm I. Chemical and physical properties. Property Minimum MElXimUll
10、l Hydroxyl number, mg KOH/g 160 167 Water content, wt % - 0.04 Acid number, mg KOH/g - 0.8 Iodine number, cg g a4 88 Refractive index, nD25“C 1.4770 1.4785 3.3 Workmanship. The materi-al shall be free from all impurities and other defects that could adversely affect its performance, The material sha
11、ll be uniform in quality and shall be manufactured in accordance with standard manufacturing procedures of the indus try. Density, 25“C, g/!l 0.99 0 958 c 2 O Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-85088 68 m 7777706 01235b0 O m MIL-G-
12、85088 (AS) 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the per- formance of all inspection requirements as specified herein. Except as otherwise specified in the contract or order,
13、the contractor may use his own or any other facilities suitable for the performance of the in- spection requirements specified herein, unless disapproved by the Gov- ernment. The Government reserves the right to perform any of the inspec- tions set forth in the specification where such inspections a
14、re deemed necessary to assure supplies and services conform to prescribed require- ments. 4.2 Sampling. Sampling shall be in accordance with MIL-STD-414, Inspec- tion Level 111, sections A and C, at the Acceptable Quality Levels (AQL) shown in table II for the following lower specification limits(LS
15、L) and upper specification limits (USL) . TABLE II. Acceptable quality levels. Aa ,% USL Property LSL Hydroxyl number 1.0 1.0 1 .o Water content - Acid number - 4. O Iodine number 2.5 2.5 Density 45 1-5 Refractive index 1.5 1 e5 - 4.3 Classification of inspections. The inspection requirements speci-
16、 fied herein are classified as follows: 1. First article inspection (see 4.4) 2. Quality conformance inspection (see 4.5) 4.4 First article inspection. First article inspection shall be perform- ed by the contractor, after award of contract and prior to production, at a location acceptable to the Go
17、vernment. First article inspection shall be performed on samples which have been produced with equipment and procedures normally used in production. First article approval is valid only on the contract under which it is granted, unless extended by the Government to other contracts. 4.4.1 tract or pu
18、rchase order. Sample size. The sample size shall be as specified in the con- 3 /- i o Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-850 68 W 7977706 OL235bL 2 W MIL-G-85088 (AS) 4.4.2 quality conformance tests specified herein plus any additi
19、onal tests specified by the procuring activity . Inspection routine. The sample shall be subjected to all of the 4.4.3 mance inspection shall be cause for refusal to grant first article approval. Failures. Failures in excess of those allowed in quality confor- 4.5 shall be as specified in table III.
20、 Quality conformance inspection. Quality conformance inspection TABLE III. Quality conformance inspection. nspec tion Hydroxyl number Water content Acid number Iodine number Density Refractive index Visual inspection Test method see 4.6.1 OD 18893 OD 18879 ASTM D 1959 OD 18869 OD 18882 see 4.6.2 4.6
21、 Test methods. 4.6.1 dine reagent is reacted with this organic hydroxyl compound to form esters of acetic acid. The excess pyridinium acetate is titrated with standard sodium hydroxide to the phenolphthalein endpoint. The differ- ence in titer between the reagent standardization and sample is used t
22、o calculate the hydroxyl number of the sample. Determination of hydroxyl number. Excess acetic anhydride-pyri- (a) Weigh to the nearest milligram (mg) a sample of 1.8 to 2.2 grams into an Erlenmeyer flask equipped with a standard taper. All apparatus must be clean and dry before use, (b) Pipet 50 mi
23、lliliters (mi) of acetic anhydride-pyridine reagent into the reaction flask. Swirl and add a boiling chip, (4:lOO acetic anhydride-pyridine concentration is prepared by adding in the proportion of 4 ml of chemically pure acetic anhydride to 100 ml reagent grade pyridine. The acetic anhydride-pyridin
24、e reagent darkens with age and should not be retained for more than 5 days. This solution should give a blank of 90 to 100 ml with 0.5N NaOH and may be adjusted if necessary.) (c) Connect the flask to a water condenser and reflux using a hot plate orheating mantle for 120 minutes, The reflux period
25、is started from the time when a drop falls every one or two seconds from the con- denser tip inside the flask. Adjust the heat to maintain this rate. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-85088 68 W 7777706 0223562 4 MIL-G-85088 (AS
26、) (d) After esterification add 10 ml of distilled water by slowly pouring down the condenser tube, being careful to avoid bumping. Hydrolyze for 5 minutes at reflux temperature. allow the condenser to drain for a few minutes. Remove the flask, stopper and cool to room temperature. Add 5 drops of 1 p
27、ercent phenolphthalein in pyridine and titrate with standard 0,3N NaOH to the pink endpoint that remains for 30 seconds. (Prepare 1 percent phenolphthalein indica- tor by adding 1 gram of phenolphthalein to 100 ml of pyridine.) (f) Run two reagent standardizations by using the same pipet as for the
28、sample, then transfer the acetic anhydride-pyridine reagent into a clean 230-ml glass-stoppered Erlenmeyer flask, add 10 ml of water, and let stand at room temperature at least 5 minates. Titrate with standard NaOH to the phenolphthalein endpoint. (e) Raise the flask and condenser as a unit from the
29、 heat source and (g) Determine the acid number of the sample in accordance with OD 18879. (h) Calculate the hydroxyl number as follows: B - S) x N x 56.1 + A Hydroxyl number, mg KOH/g = ( W Where: B= Volume NaOH used for blank, ml S= Volume NaOH used for sample, ml N= Normality of NaOH W= Weight of
30、the sample, g A= Acid number, mg KOH/g 4.6.2 conformance to the requirements of 3.3 and section 5. Visual inspection. The material shall be visually inspected for 5. PACKAGING 5.1 Packing. The material shall be packed in clean, dry containers of the size and type specified by the procurement documen
31、t. The packing container shall be so constructed as to insure acceptance by common or other carrier for safe transportation, at the lowest rate, to the point of delivery specified by the purchase order or contract. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without licens
32、e from IHS-,-,- c . MIL-G-50 68 9 7777906 0323563 6 a P MIL-G-85088 (AS) 5.2 Marking. Containers shall be marked in accordance with MIL-STD-129. Marking shall include, but not be limited to, the following information: Number and date of this specification Manufacturers and suppliers name(s) Material
33、 trade name and chemical name Date and place of manufacture 6. NOTES 6.1 an ingredient in solid rocket motors. intended use. The material described herein is intended for use as 6.2 limited to, the following: Ordering data. Procurement documents should specify, but not be (a Title, number, and date
34、of this specification (b Type and size of container desired (c I Piace of inspection (d Minimum lot size, if applicable (e Place of delivery (f I Request for three copies of results of quality conformance (g) First article sample size and any additional tests, if required First article. When a first
35、 article is required, it shall be test- inspection (if source inspected) 6.3 ed and approved under the appropriate provisions of 7-104.55 of the Armed Services Procurement Regulation(ASPR) . The contracting officer should include specific instructions in all procurement instruments, regarding arrang
36、ements for examinations, test and approval of the first article. 6.4 is in no way restrictive. A satisfactory product has been obtained from Baker Castor Oil, 5585 61st Street, Los Angeles, California. Suggested source. The following is for informational purposes and Custodian: Navy - AS Preparing activity : Navy - AS Project No: 6810-NA58 *V.S. GOVERNMENT PRINTING OFFICE: 1978-708-122/1978 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
