1、Beneficial comments, recommendations, additions, deletions, clarifications, etc., and any datawhich may improve this document should be sent by letter to: Defense Supply Center Richmond(DSCR), ATTN: DSCR-VBD, 8000 Jefferson Davis Highway, Richmond, VA 23297-5610.AMSC N/A FSC 6850DISTRIBUTION STATEME
2、NT A . Approved for public release; distribution is unlimited.METRICA-A-5926028 July 1998SUPERSEDINGMIL-C-14460C10 May 1993COMMERCIAL ITEM DESCRIPTIONCORROSION REMOVING COMPOUND, SODIUM HYDROXIDE BASE;FOR ELECTROLYTIC OR IMMERSION APPLICATIONThe General Services Administration has authorized the use
3、 of this commercial itemdescription for all federal agencies.1. SCOPE. This commercial item description (CID) covers one type of alkaline corrosionremoval compound suitable for rust removal by simple immersion of the article or by electrolyticaction without causing material change in the dimensional
4、 characteristics of the treated article.2. SALIENT CHARACTERISTICS2.1 Physical form . The raw materials used shall be intimately assembled and processed toproduce either a dry, fine, granular or dry, fine, flake compound. It shall be uniform incomposition and there shall be no evidence of segregatio
5、n or caking during handling or storage.2.2 Composition . The corrosion removing compound shall conform to the requirements oftable I when tested as specified therein.2.3 Solubility (turbidity) . When a solution of the corrosion removing compound is madeaccording to the manufacturers instructions, it
6、 shall be completely soluble in water and there shallbe no visible turbidity.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-592602TABLE I. Composition .Ingredient Percentage by weight Test paragraphSodium hydroxide 54.0 max. 2.4Trisodium salt of
7、 N-hydroxyethyl-ethylenediaminetriacetic acid*(3Na . EDTAOH)13.0 min. 2.5Sodium gluconate 25.0 min. 2.6Phosphorus and silica, total as PO 4plus SiO 20.25 max. 2.7Others, including foamers 7.0 max. 2.8*N-hydroxyethylethylenediaminetriacetic acid may be used instead of the trisodium salt if the amount
8、 of acid,when calculated as the trisodium salt, meets the requirements of this commercial item description.2.4 Sodium hydroxide content .2.4.1 Preparation of sample . Carefully weigh 660 grams (g) of the corrosion removingcompound in a 1000 milliliter (mL) beaker. Add, while stirring, enough distill
9、ed water to haveapproximately 800 mL of solution. Heat the mixture near boiling, and stir the solution tocompletely dissolve all of the compound. Cool the solution to room temperature. Transfer thesolution to a 1000 mL volumetric flask. Wash the beaker several times with distilled water andtransfer
10、the washings to the flask. Fill the flask to the 1000 mL mark with distilled water and mixwell.2.4.2 Preparation of color blank . Immediately before performing the test for sodium hydroxidecontent, prepare a color blank by dissolving 1 g of sodium cyanide in 80 mL distilled water in a125 mL Erlenmey
11、er flask and then adding 16 drops of LaMotte sulfo-orange indicator.2.4.3 Test procedure . Pipette 10 mL of the corrosion removing compound solution into a250 mL conical flask and add 10 mL of distilled water, 1 g of sodium cyanide and 16 drops ofLaMotte sulfo-orange indicator. Titrate with the stan
12、dardized 1 N HCL solution to the identicalcolor of the blank.2.4.4 Calculation . Calculate the sodium hydroxide content by the following formula:Percent NaOH = 0.600 x mL of HCL used.2.5 Trisodium salt of n-hydroxyethylethylenediaminetriacetic acid (3Na EDTAOH) content .2.5.1 Preparation of ZnSO 4 7
13、H 2 O solution . Dissolve approximately 0.5 g, accurately weighed, ofZnSO 4 7H 2 O in distilled water and dilute to 100 mL in a volumetric flask.2.5.2 Indicator . Dissolve 0.56 g of hydroxylamine hydrochloride and 0.025 g of erichrome blackT in 25 mL of methanol.Provided by IHSNot for ResaleNo repro
14、duction or networking permitted without license from IHS-,-,-A-A-5926032.5.3 Test procedure .2.5.3.1 Preparation . Add 10 g, weighed to the third decimal, of well mixed corrosion removingcompound to a 100 mL volumetric flask. Add 50 mL of distilled water and swirl to dissolve.Dilute with methanol to
15、 the 100 mL volume mark and mix thoroughly. Pipette 10 mL of solutionto a 250 mL round distillation flask and add 50 mL of methanol. Evaporate the solution on a70 C (158 F) bath under a gentle flow of air. Then evaporate to dryness at 70 C (158 F) undervacuum.2.5.3.2 Test . Remove the flask from the
16、 bath, add 50 mL of methanol, and attach a 46 cm (18inch) water-cooled condenser. Reflux 1/2 hour using a 70 C (158 F) bath. Filter throughmedium filter paper, transferring and washing filter paper three times with 5 mL of methanol eachwashing. Add 50 mL of water to the filtrate and mix. Using a pH
17、meter, adjust the filtrate to apH of about 8.5 with 3N HCL and then to a pH 7.0 with 0.1N HCL. Add 5 g of Na 4 Cl anddissolve. Add four drops of indicator (2.5.2) and titrate with ZnSO 4 . 7H 2 O to a purple end point.2.5.4 Calculation . Calculate the percentage concentration of hydrated 3Na . EDTAO
18、H from thefollowing equation:C = 1.35(AB/W)where A = weight of the ZnSO 4 7H 2 O per 100 mLB = mL of ZnSO 4 7H 2 OW= weight of test sample2.6 Sodium gluconate content .2.6.1 Internal standard solution . Accurately weigh approximately 0.5 g of L-ascorbic acid,dissolved in pyridine, and dilute with py
19、ridine to 100 mL in a volumetric flask.2.6.2 Silylating solution . Trimethylsilylimidazole in a concentration of 1.5 milliequivalents permL of pyridine solution.2.6.3 Test procedure . Dissolve approximately 10 g (weighed to the third decimal) of thecorrosion removing compound with water and dilute t
20、o volume in a 500 mL volumetric flask withwater. Pipette 1 mL of the thoroughly-mixed solution to a 2 mL vial. Add six drops ofconcentrated HCL, and evaporate to the loss of chlorine odor at 65 C (149 F) with a gentle flowof nitrogen. Pipette 1 mL of the internal standard solution (2.6.1) into the v
21、ial. Close the vialwith a Teflon-coated septum and heat at 65-70 C (149-158F ) for 30 minutes. After settling,decant the liquid into a second vial, and evaporate at 60 C (140 F) under a flow of nitrogen.Close the vial and, with a syringe, add 500 microliters ( L) of the silylating solution through t
22、heseptum. Heat for 20 minutes at 65-70 C (149-158 F). Inject 1 L of the solution into a gas-liquid chromatograph equipped with a 1.8 meters (6 foot) x 50 millimeters (mm) (1/8 inch)stainless steel column packed with 5 percent silicone OV-225 on 80-100 mesh chromsorb W-HP.Allow the chromatogram to de
23、velop for 30 minutes under the following conditions:Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-592604Inject port 230 C (446 F)Column oven 165 C (329 F)Flame ionization detector 300 C (572 F)Carrier (helium) flow 60 mL per minute2.6.4 Calcula
24、tion . Calculate the percentage of sodium gluconate in the corrosion removingcompound as follows:Sodium gluconate = 500 (A X W IS F)/(A IS W S )where A X = area of the gluconic acid derivative peakA IS = area of the L- ascorbic acid derivative peakW IS = weight of the L-ascorbic acid per 100 mL of s
25、olutionW S = weight of sample of corrosion removing compound per 500 mLF = correction factor determined with known concentrations2.7 Phosphorus and silica content . The combined phosphorus and silica content shall bedetermined by spectrographic analysis.2.8 Foaming characteristics .2.8.1 Preparation
26、 of steel panels . Prepare two steel panels. The panels, each measuring25 x 100 x 3.175 mm (1 x 4 x 1/8 inches), shall be made of SAE 1020 cold-rolled steel. A 5 mm(3/16 inch) hole shall be drilled in one corner of each panel for attaching power leads by means ofa steel bolt and nut. The surface of
27、the panels shall be abraded to a surface roughness not greaterthan 0.8 micrometers (32 microinches).2.8.2 Preparation of compound . Carefully weigh 660 g of the corrosion removing compound in a1000 mL beaker. Add, while stirring, enough distilled water to have approximately 800 mL ofsolution. Heat t
28、he mixture near boiling, and stir the solution to completely dissolve all of thecompound. Cool the solution to room temperature. Transfer the solution to a 1000 mLvolumetric flask. Wash the beaker several times with distilled water and transfer the washings tothe flask. Fill the flask to the 1000 mL
29、 mark with distilled water and mix well.2.8.3 Test procedure . Pour 500 mL of the thoroughly-mixed solution into a 600 mL standardform beaker. Place the two steel panels from 2.8.1 on opposite sides in the beaker, immersingthem to a depth of 50 mm (2 inches). Attach a suitable direct current source,
30、 making one panelanodic (positive) and the other cathodic (negative). Apply a current of 4 amperes and hold steadyfor 30 minutes at a temperature between 27 - 54 C (80 - 130 F) (by means of a water bath ifnecessary.) After the current has been off for 2 minutes, the height of the foam at the center
31、ofthe beaker shall be measured. The foam head shall be between 50 mm (1/8 inch) and 100 mm(1/4 inch).Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-5926053. REGULATORY REQUIREMENTS3.1 Marking, packaging, and labeling . Material shall be labeled,
32、 packed, and marked inaccordance with Title 49, Code of Federal Regulations (CFR) paragraphs 100 to 185.3.2 Recycled materials . The offeror/contractor is encouraged to use recovered materials to themaximum extent practical, in accordance with paragraph 23.403 of the Federal AcquisitionRegulation (F
33、AR).3.3 Material safety data sheet (MSDS) . An MSDS shall be prepared and furnished in accordancewith 29 CFR, paragraph 1910.1200.4. QUALITY ASSURANCE PROVISIONS4.1 Product conformance . The product provided shall meet the salient characteristics of thiscommercial item description, conform to the pr
34、oducers own drawings, specifications, standards,and quality assurance practices, and be the same product offered for sale in the commercialmarket. The government reserves the right to require proof of such conformance.4.2 Market acceptability . The item offered must have been sold to the government
35、orcommercial market.5. PACKAGING. Preservation, packing, and marking shall be as specified in the contract ororder.6. NOTES. This section contains information of a general or explanatory nature that is helpful,but is not mandatory.6.1 Source of documents . The Code of Federal Regulations and Federal
36、 Acquisition Regulationmay be obtained from the Superintendent of Documents, U.S. Government Printing Office,Washington, DC 20402-0001.6.2 Ordering data . Acquisition documents must specify the following:a. Title, number, and date of this CID.b. Unit and quantity required.c. Packaging requirements.6
37、.3 National stock number (NSN) . NSN 6850-00-550-5565 corresponds to this CID. It may notbe indicative of all possible NSNs associated with this document.6.4 Sources of supply . The following are suppliers whose products are known to meet therequirements of this CID. Competition is not limited to th
38、ese sources.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-592606Name of CompanyFine Organics Corporation205 Main StreetLodi, NJ 07644(201) 472-6800Oakite Products IncorporatedP.O. Box 60250 Valley RoadBerkeley Heights, NJ 07922(800) 526-4473Mac
39、Dermid Incorporated245 Freight StreetWaterbury, Conn. 06702(203) 575-5700MILITARY INTERESTS: CIVIL AGENCY COORD INATING ACTIVITY:GSA - 10FTECustodiansArmy - MR Preparing Activity:Air Force - 68 DLA - GSNavy - AS(Project 6850-1257)ReviewersArmy - CR4, MIAir Force - 11Navy - SA, SHProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
