Norm

ASTM D4590-13

Standard Test Method for Colorimetric Determination of p-tert-Butylcatechol In Styrene Monomer or AMS (α–Methylstyrene) by Spectrophotometry

48,24

Over deze norm

Status Definitief
Aantal pagina's 3
Commissie D16.07
Gepubliceerd op 01-06-2013
Taal Engels

1.1 This test method is applicable to the determination of residual 4-tertiary-butylcatechol (TBC) in styrene monomer or AMS in the 1 to 100 mg/kg range. Any other compound producing color at 490 nm when contacted with aqueous sodium hydroxide solution will interfere. It may be compensated for by including it in the preparation of the standard solutions, if its identity and concentration in the sample are known.

1.2 In determining the conformance of the test results using this method to applicable specifications, results shall be rounded off in accordance with the rounding-off method of Practice E29.

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

1.4 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. For specific statements on hazards, see Section 8.

Details

ICS-code 17.180.20
71.080.60
Nederlandse titel Standard Test Method for Colorimetric Determination of p-tert-Butylcatechol In Styrene Monomer or AMS (α–Methylstyrene) by Spectrophotometry
Engelse titel Standard Test Method for Colorimetric Determination of p-tert-Butylcatechol In Styrene Monomer or AMS (α–Methylstyrene) by Spectrophotometry

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