1、 Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any data that may improve this document should be sent to: Defense Supply Center Richmond (DSCR), ATTN: DSCR-VEB, 8000 Jefferson Davis Highway, Richmond, VA 23297-5616 or e-mailed to STDZNMGTdla.mil. Since contact
2、information can change, you may want to verify the currency of this address information using the ASSIST database at https:/assist.daps.dla.mil. AMSC N/A FSC 6850 METRIC A-A-59133B SUPERSEDING 20 January 2010 A-A-59133A 9 November 2004 COMMERCIAL ITEM DESCRIPTION CLEANING COMPOUND, HIGH PRESSURE (ST
3、EAM) CLEANER The General Services Administration has authorized the use of this commercial item description for all federal agencies. 1. SCOPE. This commercial item description (CID) covers alkaline steam cleaning compounds for use in steam cleaning machines for cleaning ferrous and nonferrous surfa
4、ces of equipment. 2. CLASSIFICATION. The cleaning compounds shall be classified by the following types. The type to be furnished shall be as specified (see 7.3(b). Type I - Compounds containing phosphates Type II - Compounds containing no phosphates 3. SALIENT CHARACTERISTICS 3.1 Performance require
5、ments. The steam cleaning compound shall be equal to or superior in effectiveness to the comparison formula of tables I and II. This shall be demonstrated by meeting the performance requirements of table III when tested as specified therein. 3.2 Stock solutions. 3.2.1 Hard water stock solution. A 68
6、4 milligram (mg)-per-liter (L) (40 grains-per-gallon) hard water solution is prepared by dissolving 0.8090 grams of American Chemical Society (ACS) grade calcium acetate monohydrate (Ca(C2H3O2)2H2O) and 0.5546 grams of ACS grade magnesium sulfate heptahydrate (MgSO47H2O) per liter of freshly boiled
7、distilled water. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59133B 2 TABLE I. Composition of type I comparison compound. Component Percent by weight Sodium metasilicate, pentahydrate (Na2SiO35H2O) 35.0 Sodium phosphate, monobasic monohydrate
8、 (NaH2PO4H2O) 10.5 Sodium tripolyphosphate (Na5P3O10) 52.5 Nonionic surface-active agent, MIL-D-16791, type 1 2.0 TABLE II. Composition of type II comparison compound. Component Percent by weight Sodium metasilicate, anhydrous (Na2SiO3) 54.2 Citric acid, monohydrate (C6H8O7H2O) 23.6 Citric acid, dih
9、ydrate (C6H8O72H2O) 20.2 Nonionic surface-active agent, MIL-D-16791, type 1 with cloud point 54 C 3 C 2.0 TABLE III. Performance requirements. Performance requirement Limits Test paragraph Water softening or stability Paragraph 3.3.1 3.3.2 Cleaning efficiency Paragraph 3.4.1 3.4.5 Solubility 0.25% 3
10、.5 pH value (0.50% solution, type I or 0.30% solution, type II) 10.5 pH 11.4 3.6.2 Corrosion Paragraph 3.7.1 3.7.5 Surface tension (0.25% solution, type I or 0.15% solution, type II) 42 dynes/centimeter 3.8 Dust forming properties Change in color 3.9 Penetration 30.0 3.10 Segregation 2% 3.11 Finenes
11、s 100% pass 3.35 mm sieve (U.S. No. 6 sieve) 3.0% pass 150 m sieve (U.S. No. 100 sieve) 3.12 Rinsing No white film 3.13 Phosphates (type II only) None 3.14 Caking in storage 100% pass 3.35 mm sieve (U.S. No. 6 sieve) 3.15 Caking as received None 3.16 Carbonates or bicarbonates No effervescence 3.17
12、Fatty acid, soap, rosin, starch None 3.18 Free sodium hydroxide Paragraph 3.19.1 3.19.2 Biodegradability 90% 3.20 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59133B 3 3.2.2 Cleaning compound stock solution. Weigh 10 grams of the type I cleani
13、ng compound or 6 grams of type II cleaning compound and transfer to a 2-L volumetric flask. Add 500 milliliters (mL) of hot distilled water and agitate to dissolve the cleaning compound. Cool to room temperature and dilute to volume with distilled water. 3.2.3 Comparison compound stock solution. Wei
14、gh 10 grams of the table I composition cleaning compound, or 6 grams of table II composition cleaning compound, and transfer to a 2-L volumetric flask. Add 500 mL of hot distilled water and agitate to dissolve the cleaning compound. Cool to room temperature and dilute to volume with distilled water.
15、 3.2.4 Ammonium molybdate solution (Johnsons formula). Mix 55 grams of ammonium molybdate (NH4)6Mo7O244H2O) and 50 grams of ammonium nitrate (NH4NO3) with 10 mL of 15 normal (N) ammonium hydroxide (NH4OH) and 20 mL of water. Stir and dilute to about 700 mL with water. Heat while stirring for 30 minu
16、tes until all salts have dissolved. Dilute to 1 L with water, let stand overnight and filter, but do not wash the residue. 3.3 Water softening or stability. 3.3.1 Performance requirements. When tested as specified in paragraph 3.3.2 at a temperature of 126.5 C to 129.5 C, a 0.25 percent solution of
17、type I or a 0.15 percent solution of type II steam cleaning compound in water of 20 grains hardness shall give no evidence of precipitation or curd formation, nor shall there be an opalescence greater than that produced in a solution of the comparison compound of the same type as specified in table
18、I or table II (as applicable) when the two compounds are tested simultaneously. 3.3.2 Test procedure. Add 20 mL of hard water stock solution (see 3.2.1) to a test tube (200 mm long X 25 mm outside diameter) containing 20 mL of the cleaning compound solution (see 3.2.2) and mix well. Immerse in the s
19、olution a test panel of 1020 20-gage cold-rolled steel, 7.5 centimeters (cm) X 1.25 cm (3 inches X 1/2 inch) in size that has been polished with coarse emery cloth and cleaned with acetone. Place the test tube in a laboratory steam sterilizer at 126.5 C to 129.5 C (steam pressure of 145 to 165 kilop
20、ascals (21 to 24 pounds per square inch) for 1 hour. Remove from the sterilizer. Cool to room temperature and examine for precipitation. Use an electrophotometer to measure opalescence in terms of optical density. Tests shall be run in quadruplicate. The same test shall be run in quadruplicate using
21、 the comparison compound solution (see 3.2.3) of the same type. The opalescence shall not be greater than that given by the statistical upper limit. The statistical upper limit at the 0.05 level may be obtained with the following formula: Statistical upper limit = x + 0.72W where x = Average of four
22、 determinations with the comparison compound. W = Difference between the maximum and minimum values in the four determinations with the comparison compound. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59133B 4 3.4 Cleaning efficiency. 3.4.1 P
23、erformance requirement. The cleaning compound shall be equal to or superior to the standard comparison steam cleaning compound of the same type in ability to remove a standard soil when tested as specified in 3.4.5. 3.4.2 Preparation of test panels. Test panels of 1020 20-gage cold-rolled steel shal
24、l be prepared 6.5 X 6.5 cm (2-1/2 inches X 2-1/2 inches) in size. Each test panel shall have a hole 6 mm (1/4 inch) in diameter placed 3 mm (1/8 inch) from one corner. Sharp edges shall be smoothed with coarse emery cloth. The panels shall then be degreased in ACS grade acetone. Both faces of each p
25、anel shall be polished with the same abrasive, stroking in one direction only. Clean in a hot alkaline solution until free from water-break. Rinse in water, then dip in absolute ethyl alcohol and dry with paper toweling. 3.4.3 Preparation of soiled panels. The soiling material shall be 1065 grade mi
26、neral oil conforming to Society of Automotive Engineers SAE-J1966, “Oil, Lubricating, Aircraft Piston Engine (Non-dispersant Mineral Oil)“. The cleaned panels, prepared as described in 3.4.2, shall be suspended on an “S“ hook and dipped, one at a time, into a 400-mL beaker of the oil maintained at a
27、 temperature of 25 C 1 C. They shall be removed and allowed to drain at the same temperature for 30 minutes. The remaining drop of oil in the lower corner of each panel shall be removed with absorbent cotton. 3.4.4 Preparation of cleaning solutions. In a 2-L beaker, place 1,600 mL of 0.5 percent dis
28、tilled water solution of the type I compound or 0.3 percent solution of the type II compound (see 3.2.2). Bring solution to a boil and keep at this temperature throughout the test. Maintain solution level throughout the test by addition of distilled water as required. 3.4.5 Test procedure. Immerse t
29、he soiled test panels, prepared as specified in 3.4.2, in the cleaning solution and in the comparison solution by means of an iron or copper hook, one end of which passes through the 6-mm (1/4-inch) hole and the other end over a glass rod placed across the top of the 2-L beaker. At the end of 2-1/2
30、minutes and 5 minute intervals, respectively, move the test panel forward and backward 3 times in each direction and then up and down 3 times in each direction; total agitation shall require not more than 6 seconds. At the end of 5 minutes immersion, remove the panel from the cleaning solution and g
31、ive two six-second rinses in distilled water (no agitation) with a four second drain between rinses. The rinsing solutions shall consist of two 1-L beakers, each containing 800 mL of distilled water at 25 C 1 C. Dry the panel in a 50 C oven for 20 minutes, cool, and weigh. Thoroughly wash the panel
32、with acetone, rinse in absolute ethyl alcohol, dry with paper toweling, and reweigh. The difference in weight is the amount of residual soil. Tests shall be run in quadruplicate. The residual soil of any test compound determination shall be not greater than that given by the statistical upper limit.
33、 The statistical upper limit at the 0.05 level may be obtained with the following formula: Statistical upper limit = x + 0.72W where x = Average of four determinations with the comparison compound. W = Difference between the maximum and minimum values in the four determinations with the comparison c
34、ompound. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59133B 5 3.5 Solubility. Weigh 10 grams of the compound and add to 100 mL of distilled water at 25 C 1 C in a 250-mL beaker. Stir until compound is thoroughly dissolved. Let stand 10 minute
35、s. Filter through a tared Gooch crucible with an asbestos mat. Wash with distilled water until washing gives no alkaline reaction to phenophthalein. Dry at 105 C for 3 hours, cool and weigh. Gain in weight of crucible and contents is insoluble matter. 3.6 pH value. 3.6.1 Apparatus. The test shall be
36、 made with a pH meter having a sensitivity and readability of at least 0.05 pH. A sealed type alkali-resistant glass electrode shall be used with a calomel reference electrode. The meter shall be standardized against a pH 10 buffer solution immediately before making a test. 3.6.2 Test procedure. Pre
37、pare 100 mL of 0.5 percent distilled water solution of the type I compound or 0.3 percent solution of the type II compound (see 3.2.2). Determine the pH at a temperature of 25 C 1 C. No correction shall be made for sodium ion concentration. 3.7 Corrosion test. 3.7.1 Performance requirements. Boiling
38、 0.25 percent and 1.2 percent solutions of the cleaning compound shall cause no loss in weight of aluminum or aluminum alloy test specimens in excess of that indicated in table IV when tested as specified in 3.7.5. There shall be no visible staining, discoloration, etching, or pitting of the test sp
39、ecimens. TABLE IV. Loss in weight permitted in corrosion test. Type Percent solution A1-1100 A1-2024 I 0.25 1.2 mg 0.8 mg I 1.2 0.8 mg 0.5 mg II 0.15 1.2 mg 0.8 mg II 1.2 0.8 mg 0.5 mg 3.7.2 Preparation of test panels. Test panels of 1100 aluminum shall be cut 7.6 cm X 1.9 cm (3 inches X 3/4 inch) i
40、n size from approximately 0.9-mm (0.034-inch) thick sheet aluminum conforming to ASTM B209, “Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate“, H14 or H24 temper. Test panels of 2024-T3 aluminum shall be cut 7.6 cm X 1.9 cm (3 inches X 3/4 inch) in size from approximately 0.6-m
41、m (0.025-inch) thick sheet aluminum conforming to SAE-AMS-QQ-A-250/4, “Aluminum Alloy 2024, Plate and Sheet“. Sharp edges shall be smoothed with No. 150 alundum (Al2O3) polishing paper. Polish both faces with the same abrasive, stroking in one direction only. The 1100 aluminum panels should be light
42、ly polished with approximately 19 mg of metal removed in polishing to avoid smearing of the surface. 3.7.3 Cleaning of panels. Panels shall be cleaned with ACS grade acetone using a swab of absorbent cotton. They shall then be wiped with paper toweling, dipped in absolute ethyl alcohol, and again wi
43、ped with paper toweling. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59133B 6 3.7.4 Preparation of test solutions. Weigh 2.5 grams of the type I cleaning compound or 1.5 grams of the type II cleaning compound into a 1-L volumetric flask. Add
44、500 mL of hot distilled water and agitate to dissolve the cleaning compound. Cool to room temperature and dilute to volume with distilled water. Prepare another solution of the same type and in the same manner using 12.0 grams of the compound. 3.7.5 Test procedure. Each cleaned test panel shall be w
45、eighed to 0.0001 gram and immersed completely in 200 mL of the boiling solution of the compound in a 250-mL beaker. Keep the solution at a boil throughout the test, maintaining the solution level by additions of distilled water as required. After 60 minutes, remove the test panel from the boiling so
46、lution, rinse under flowing tap water (cold), rinse in distilled water (25 C 1 C), dip in absolute alcohol, wipe dry with paper toweling, and reweigh. The presence of corrosion products shall be noted. Tests shall be run in duplicate on each aluminum material in each solution. 3.8 Surface tension. U
47、sing 100 mL of the 0.25 percent distilled water solution of the type I compound or 100 mL of the 0.15 percent solution of the type II compound as prepared in paragraph 3.7.4, determine the surface tension at 25 C 1 C using an interfacial tensiometer. Harkins-Jordan (J. Am. Chem. Soc., 52: 1930, p. 1
48、751) correction factors shall be applied. 3.9 Dust forming properties. The inside walls of a 250-mL glass-stoppered graduated cylinder shall be rendered completely free of any grease and moisture. A 25-gram sample of the cleaner shall then be placed on the bottom of the clean graduated cylinder. The
49、 graduated cylinder shall then be stoppered, inverted, and immediately returned to its original position. After any suspended dust has been allowed to settle for 5 seconds, the stopper of the graduated cylinder shall be removed. A moistened piece of red litmus paper shall be suspended in the graduated cylinder without touching the walls so that the lower end of the litmus paper strip coincides wi
