1、A-A-58044A 27 October 2011 SUPERSEDING A-A-58044 30 June 1995 COMMERCIAL ITEM DESCRIPTION N-METHYLPYRROLIDONE The General Services Administration has authorized the use of this commercial item description for all federal agencies. 1. SCOPE. This commercial item description covers N-methylpyrrolidone
2、 for cold-wipe removal of overspread and/or overspray of polysulfide sealants and epoxy adhesives from aircraft and aerospace ground equipment surfaces. See Table I for pertinent information. Table I. Description Chemical Abstract Service (CAS) Registry No: 872-50-4 CAS Registry Name: 1-Methyl-2-Pyr
3、rolidone Synonym: N-Methylpyrrolidone AMSC N/A FSC 6810 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. METRIC Comments, suggestions, or questions on this document should be addressed to AFPA/AFTT, 2430 C Street, Bldg 70, Area B, Wright-Patterson AFB OH 45433-7632 o
4、r e-mailed to AFPET.AFTTwpafb.af.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at https:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-
5、,-A-A-58044A 2 2. SALIENT CHARACTERISTICS. 2.1 Workmanship2.2 . The product shall consist of a stable, homogenous fluid free from dirt, fibers, lint, chips, and/or other foreign matter. The material shall not contain any amount of any chlorinated compounds, phosphates, abrasives, chromates, phenols,
6、 cresols, amines, petroleum hydrocarbons, lead, mercury, cadmium, chromium, sodium chloride, urea, sodium, sulfates, nitrates, nitrites, any ozone depleting compounds, or any of the targeted chemicals listed in the EPA 33/50 Program final report, EPA-745-R-99-004, March, 1999. Physical propertiesTab
7、le II. Tests. . The product shall exhibit the physical and chemical properties described in Table II and 2.4 when tested in accordance with the methods listed. Component Limit Method Assay, % by wt, min 99.0 Gas Chromatography Water, % by wt, max 0.1 ASTM E 1064 Color, Pt-Co units, max 100 ASTM D 12
8、09 -Butyrolactone, % by wt, max Report Gas Chromatography Foreign matter None allowed Visual Nonvolatile residue, % by wt, max 10.10 Section 2.3 1/This requirement does not apply to product that has been purified by vacuum distillation. 2.3 UNonvolatile residueU. Transfer 10 1 grams of product to th
9、e round bottom flask of a Kugelrohr apparatus. Assemble the apparatus and operate at 1 to 2 mm Hg and 65 2C for 60 5 minutes. Calculate the weight percent gravimetrically. 2.4 UCorrosionU. The material shall be tested in accordance with ASTM F 483 (Total Immersion Corrosion). Test panels shall be pr
10、epared from cold-rolled sheet carbon steel and sheet aluminum conforming to SAE AMS 5046C and SAE AMS-QQ-A-250, respectively. Steel panels shall be fabricated from 1020 alloy. Aluminum test panels shall be fabricated from 2024 and 7075 alloy. The product shall not cause etching, accretion, or pittin
11、g corrosion; nor any discoloration or dulling of the panels; nor cause a weight change of an average of three test panels greater than that shown in Table III. Table III. Maximum allowable weight change. Alloy Average of 3 Panels Weight Loss, Max (mg/cm2/168 hrs) 2024 clad aluminum 0.5 7075 clad alu
12、minum 0.05 1020 steel 0.05 3. PRODUCT CONFORMANCE PROVISIONS. 3.1 UContractor certificationU. The contractor shall certify and maintain substantiating evidence that the product offered meets the salient characteristics of this Commercial Item Description, and that the product conforms to the produce
13、rs own drawings, specifications, standards, and quality assurance practices, and be the same product offered for sale in the commercial marketplace. The government Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-58044A 3 reserves the right to req
14、uire proof of such conformance prior to first delivery and thereafter as may be otherwise stipulated by the provisions of the contract. 4. PACKAGING. 4.1 Preservation, packaging, packing and marking5. NOTES. . The preservation, packaging, packing, labeling, and marking shall be as specified in the c
15、ontract or order. 5.1 Part or identification numberThis example describes a part numbering system for CID A-A-58044. . The following part identification numbering procedure is for government purposes and does not constitute a requirement for the contractor. AA58044 - Size of container in liters. 100
16、 5.2 Source of documents5.2.1 . ASTM documents. Documents are available through ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA, 19428-2959. Electronic copies of ASTM standards may be obtained through http:/www.astm.org. 5.2.2 Society of Automotive Engineers (SAE) Docum
17、ents. Documents are available through SAE International, 400 Commonwealth Drive, Warrendale, PA, 15096-0001. Electronic copies of these SAE standards may be obtained through http:/www.sae.org. 5.3 Key Words1-Methyl-2-Pyrrolidine . NMP Custodians: Preparing Activity: Air Force - 68 Air Force 68 DLA -
18、 GS (Project 6810-2011-008) Note: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information using the ASSIST Online database at https:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
