1、NOT MEASUREMENT I SENSITIVE TT-T-2935 May 5,2000 FEDERAL SPECIFICATION THINNER, PURGING The General Services Administration has authorized the use of this federal specification by all federal agencies. 1. SCOPE AND CLASSIFICATION 1.1 Scope. This specification covers the requirements for a low vapor
2、pressure thinner for purging and cleaning high solids epoxy and polyurethane coatings from application equipment. 2. APPLICABLE DOCUMENTS 2.1 Government publications. The following documents, of the issues in effect on the date of invitation for bids or request for proposal, form a part of this spec
3、ification to the extent specified herein: FEDERAL STANDARDS FED -STD- 1 4 1 - Paint, Varnish, Lacquer and Related Materials; Methods of Inspection, Sampling and Testing FED-STD-313 - Material Safety Data, Transportation Data and Disposal Data for Hazardous Materials Furnished to Government Activitie
4、s Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any data that may improve this document should be sent to: Commander, Naval Air Warfare Center Aircraft Division, Code 414100 B120-3, Highway 547, Lakehurst, NJ 08733-5100. FSC 8010 Provided by IHSNot for ResaleNo
5、 reproduction or networking permitted without license from IHS-,-,-TT-T-2935 (Activities outside the Federal Government may obtain copies of federal specifications, standards and commercial item descriptions as specified in the General Information section of the Index of Federal Specifications, Stan
6、dards and Commercial Item Descriptions. The index is for sale on a subscription basis from the Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402.) (Single copies of this specification and other federal specifications and commercial item descriptions required by activ
7、ities outside the Federal Government for bidding purposes are available without charge from the General Services Administration, Federal Supply Service, Specification Section, Suite 8100, LEnfant Plaza, SW, Washington, DC 20407.) (Federal Government activities may obtain copies of federal standardiz
8、ation documents and the Index of Federal Specifications, Standards, and Commercial Item Descriptions from established distribution points in their agencies.) MILITARY STANDARDS MIL-STD-129 - Military Marking MIL-STD-290 - Packaging of Petroleum and Related Products (Copies of military specifications
9、 and standards required by contractors in connection with specific procurement functions are obtained from Customer Service, Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19 1 1 1-5094.) CODE OF FEDERAL REGULATIONS OCCUPATIONAL SAFETY AND HEALTH STANDARDS 29
10、CFR 1910.1200 - Toxic and Hazardous Substances - Hazard Communication DEPARTMENT OF TRANSPORTATION 49 CFR 171-178 - Research and Special Programs Administration (Hazardous Materials Regulations) (The code of Federal Regulations (CFR) and the Federal Register (FR) are for sale on a subscription basis
11、 from the Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402. When indicated, reprints of certain regulations may be obtained from the federal agency responsible for issuing them.) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license
12、from IHS-,-,-TT-T-2935 2.2 Other publications. The following documents form a part of this specification to the extent specified herein. Unless a specific issue is identified, the issue in effect on date of invitation for bids or request for proposal shall apply. AMERICAN NATIONAL STANDARDS INSTITUT
13、E (ANSI) ANSI-Z 129.1 - Chemicals, Hazardous Industrial, Precautionary Labeling of (DoD Adopted) (Private sector and civil agencies may purchase copies of this voluntary standard from the American National Standards Institute, Inc., 1430 Broadway, New York, NY 10018.) AMERICAN SOCIETY FOR TESTING AN
14、D MATERIALS (ASTM) ASTM-D93 ASTM-D89 1 ASTM-D1296 ASTM-D 1 35 3 ASTM-D 16 13 ASTM-D2804 ASTM-D2917 ASTM-D395 1 ASTM-D40 17 ASTM-D4835 Flash Point by Pensky-Martens Closed Cup Tester, Standard Test Method for (DoD Adopted) Specific Gravity, Apparent, of Liquid Industrial Chemicals, Standard Test Meth
15、ods for (DoD Adopted) Odor of Volatile Solvents and Diluents, Standard Test Method for (DoD Adopted) Nonvolatile Matter in Volatile Solvents for Use in Paint, Varnish, Lacquer, and Related Products, Standard Test Method for (DoD Adopted) Acidity in Volatile Solvents and Chemical Intermediates Used i
16、n Paint, Varnish, Lacquer, and Related Products, Standard Test Method for (DoD Adopted) Purity of Methyl Ethyl Ketone by Gas Chromatography, Standard Test Method for (DoD Adopted) Methyl Isoamyl Ketone, Standard Specification for Commercial Packaging, Standard Practice for (DoD Adopted) Water in Pai
17、nts and Paint Materials by Karl Fischer Method, Standard Test Method for (DoD Adopted) Propylene Glycol Monomethyl Ether Acetate, Standard Specification for (Private sector and civil agencies may purchase copies of this voluntary standard from the American Society for Testing and Materials, 100 Barr
18、 Harbor Drive, West Conshohocken, PA 19428-2959.) (DoD activities may obtain copies of those adopted voluntary standards listed in the DoD Index of specifications and Standards free of charge from the Standardization Document Order Desk, Building 4D, 700 Robbins Avenue, Philadelphia PA, 191 11-5094.
19、) 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TT-T-2935 3. REQUIREMENTS 3.1 First article. When specified (see 6.2), samples shall be subjected to first article inspection in accordance with 4.3. 3.2 Composition. The components of the purging t
20、hinner shall conform to the requirements shown in table I and shall be urethane grade. In addition, the composition of the purging thinner shall conform to the percentages by volume shown in table I. MATERIALS Methyl isoamyl ketone (urethane grade) TABLE I. Purging thinner composition. REQUIREMENT P
21、ERCENT BY VOLUME ASTM-D2917 40 +2 ASTM-D4835 Propylene glycol mono-methyl ether acetate (urethane grade) 20 +2 Ethyl 3-ethoxy propionate I/ (urethane grade) Assay purity 99.0 percent minimum, inhibited with 50- 150 ppm Butylated hvdroxvtoluene 40 +2 PROPERTY Vapor pressure at 20 OC - 1/ Eastman Chem
22、ical Products “Ektapro EEP” or equivalent. REQUIREMENT 3.2 10.5 mm Hg 3.3 Properties of purging thinner. The properties of the purging thinner shall be in accordance with table II, when tested in accordance with the test methods in 4.5. Flash point Specific gravity at 20/20 OC TABLE II. Purging thin
23、ner properties. 115 12 OF (46 11 OC) 0.899 10.002 Alcohol content, maximum Nonvolatile residue, maximum Acidity (free acid as acetic acid), 0.6 percent by weight 0.02 gram per 100 mL 0.02 weight percent I maximum I I Appearance Free from suspended matter when examined by transmitted light 4 Provided
24、 by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TT-T-2935 TABLE II. Purging thinner properties Continued. I PROPERTY I REOUIREMENT Odor Characteristic odor of the materials used in formulating the blend. There shall be no odor after drying. I Spot test I No
25、oily spot or stain on filter paper 3.4 Toxicity. The purging thinner supplied under this specification shall have no adverse effect on the health of personnel when used for its intended purpose. A Material Safety Data Sheet (MSDS) shall be prepared and submitted in accordance with FED-STD-313; addit
26、ionally, it shall conform to 29 CFR 1910.1200 (see 6.3). 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract, the contractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified
27、in the contract, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such in
28、spections are deemed necessary to ensure supplies and services conform to prescribed requirements. 4.2 Classification of inspections. The examinations and tests specified herein are classified as follows: a. First article inspection (see 4.3). b. Quality conformance inspection (see 4.4). 4.3 First a
29、rticle inspection. When specified (see 6.2), first article testing shall consist of all requirements and tests specified in section 3, and shall be accomplished on the first production lot of a contract or purchase order. In addition, the manufacturer shall certify that the thinner has been blended
30、in accordance with table I. Failure of any examination or test shall result in first article disapproval. 4.4 Quality conformance inspection. Quality conformance inspection shall be performed on each lot of thinner offered for inspection and shall consist of thinner properties testing (see 4.4.2) an
31、d packaging inspection (see 4.4.3). When specified, the manufacturer shall perform the quality conformance inspection and shall furnish with each lot a certified test report showing the thinner conforms to the specification requirements. 5 Provided by IHSNot for ResaleNo reproduction or networking p
32、ermitted without license from IHS-,-,-TT-T-2935 4.4.1 Lot formation. A lot shall consist of all the thinner manufactured at one time from one batch, forming part of one contract or order, and submitted for acceptance at one time. 4.4.2 Thinner properties. Two filled containers shall be selected at r
33、andom from each inspection lot and tested to the requirements of section 3 and tables I and II. Failure of either container to pass any of the tests specified shall be cause to reject the lot offered for inspection. 4.4.3 Packaging. The contracting officer shall specify the packaging inspection (see
34、 6.2). 4.5 Test methods. The thinner shall be tested in accordance with the test methods and paragraphs shown in table III. Table III. Test methods. PROPERTY Vapor pressure at 20 “C Flash point Specific gravity at 20/20 “C Water content, maximum Alcohol content. maximum TEST METHOD (see 4.5.1) ASTM-
35、D93 ASTM-D89 1 ASTM-D40 17 (see 4.5.2) I Nonvolatile residue, maximum I ASTM-D1353 Acidity (free acid as acetic acid), maximum ASTM-D1613 Appearance Odor I Spot test I FED-STD-141, Method 4491 FED-STD-141, Method 4261 ASTM-D1296 4.5.1 Vapor pressure. Vapor pressure shall be calculated as the sum of
36、the partial pressures of each component, where each partial pressure shall be calculated as the product of the mole fraction of the component and the pure component vapor pressure at 20 OC. 4.5.2 Alcohol content. The alcohols present and their concentration shall be determined in accordance with AST
37、M D-2804. Alcohol content shall be determined by summing the percentages of all alcohols typically present in the individual components, including diacetone alcohol, methyl amyl carbinol, methyl isoamyl carbinol, 1 -methoxy-2-propanol (also known as propylene glycol monomethyl ether), in addition to
38、 the alcohols referenced in ASTM-D2804. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TT-T-2935 5. PACKAGING 5.1 Packaging. Packaging shall be Level A or Commercial, as specified in 6.2. 5.1.1 Level A. Unless otherwise specified in the contract o
39、r order, the purging thinner shall be packaged in one pint, one quart, one gallon, 5 gallon or 55 gallon containers. Packaging and packing shall conform to MIL-STD-290. 5.1.2 Commercial. The purging thinner shall be packaged in accordance with ASTM-D395 1. 5.2 Marking. In addition to any special mar
40、king required by the contract or order, shipping containers and palletized unit loads, when applicable, shall be marked in accordance with MIL-STD- 129 and MIL-STD-290. Individual containers shall bear printed labels with the following: Federal Specification TT-T-2935 Thinner, Purging Manufacturers
41、name and product number Date of manufacture by month and year Lot number Net contents Flash point Vapor Pressure All unit and intermediate packs shall be labeled in accordance with all applicable laws, statutes, regulations and ordinances, including federal, state, and municipal requirements. All un
42、it containers (including those that serve as shipping containers) shall be marked in accordance with 49 CFR 171-178 and with applicable precautionary information detailed in ANSI 2129.1. 6. NOTES INFORMATION FOR GUIDANCE ONLY. (This section contains information of a general or explanatory nature tha
43、t may be helpful, but is not mandatory.) 6.1 Intended use. The low vapor pressure ( 5 mm Hg) purging thinner supplied to this specification is intended for purging and cleaning high solids epoxy and polyurethane coatings from application equipment. In addition, the thinner may be used for hand-wipe
44、cleaning of most aircraft metals and other aircraft surfaces prior to painting and sealing. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TT-T-2935 6.2 Acquisition requirements. Acquisition documents should specify the following, as a minimum: a.
45、 Title, number and date of this specification, including any amendments. b. Quantity of thinner desired. c. Whether first article is required and laboratory used to perform tests (see 4.3). d. Whether manufacturer is to perform quality conformance inspection including certified e. Level of packaging
46、, including type and capacity of containers required (see 5.1). f. Address(es) for distribution of MSDS (see 6.3). test reports (see 4.4). 6.3 Material Safety Data Sheet (MSDS). The 29 CFR 1910.1200 requires that the MSDS for each hazardous chemical used in an operation must be readily available to
47、personnel using the material. Contracting Officers will identify the activities requiring copies of the MSDS. 6.4 Part identification number. The following part numbering procedure is for Government purposes and does not constitute a requirement: TT-T-2935 - ,x I Size: P = Pint, Q = Quart, G = Gallo
48、n, C = 5 Gallon, D = 55 gallon Specification identifier 6.5 Subiect term (key word) listing. Prepaint Preseal Solvent CIVIL COORDINATING AGENCY: GSA-FSS Preparing activity: Navy - AS (DoD Project 80 10-0 154) 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
