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ASTM D7772-15

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Standard Test Method for Carbon Black Extractables – Absorbance of Cyclohexane Extract

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1.1 This method covers the determination of extinction (absorbance) of carbon black cyclohexane extract at 386 nm using a UV spectrophotometer.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


4.1 This procedure serves as a screening process for carbon blacks used in the manufacturing of products that are to come into contact with food. The cyclohexane extract absorbance at 386 nm must be less than 0.10 for a 50 mm cuvette in order to fulfill various regulatory requirements.

SDO ASTM: ASTM International
Document Number D7772
Publication Date June 1, 2015
Language en - English
Page Count 3
Revision Level 15
Supercedes
Committee D24.66
Publish Date Document Id Type View
June 1, 2015 D7772-15 Revision
Nov. 1, 2011 D7772-11 Revision
Nov. 1, 2023 D7772-15R23 Reaffirmation
Dec. 1, 2019 D7772-15R19 Reaffirmation