TT-N-97 Naphtha; AromaticThis specification covers aromatic petroleum naphtha for use in the manufacture of paints and in the formulation of other industrial products.

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TT-N-97D

TABLE II. Copper corrosion.

Naphtha	Temperature	Time
Type I (grades A and B)	50 °C (122 °F)	3 hours
Types II and III	100 °C (212 °F)	3 hours

3.4.4 Doctor test. When tested as specified in 4.4.3, the naphtha shall produce no black precipitate and no discoloration and shall not noticeably mask the yellow color of the sulfur film.

3.4.5 Spot test. When tested as specified in 4.4.3.2, the naphtha shall show no evidence of stain or residual oiliness.

3.4.6 Water test. When tested as specified in 4.4.3, the naphtha shall remain clear and produce no turbidity.

3.4.7 Acidity. When tested as specified in 4.4.3, the naphtha shall show no evidence of acidity.

3.4.8 Residue. When tested as specified in 4.4.3, the residue of the naphtha shall contain no mineral acid.

3.4.9 Stability. When tested as specified in 4.4.3.3, the naphtha shall show no change in color, appearance, odor, or acidity as specified in table I for the color requirement, 3.4.1, 3.4.2, and 3.4.7.

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 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 inspections are deemed necessary to assure that supplies and services conform to prescribed requirements.

4.2 Quality conformance inspection. Quality conformance inspection shall consist of the examinations of paragraph 4.3 and the tests of 4.4.

4.3 Examination.

4.3.1 Lot. For the purposes of sampling, a lot of the naphtha shall consist of a manufacturer's batch. A batch is defined as the end product of all raw materials mixed, blended, or processed in a single operation.