ASTM International - ASTM D6144-12
Standard Test Method for Analysis of AMS (α-Methylstyrene) by Capillary Gas Chromatography
|Publication Date:||1 December 2012|
|ICS Code (Physicochemical methods of analysis):||71.040.50|
significance And Use:
5.1 This test method is suitable for setting specifications on the materials referenced in 1.2 and for use as an internal quality control tool where AMS is produced or is used in a manufacturing... View More
5.1 This test method is suitable for setting specifications on the materials referenced in 1.2 and for use as an internal quality control tool where AMS is produced or is used in a manufacturing process. It may also be used in development or research work involving AMS.
5.2 This test method is useful in determining the purity of AMS with normal impurities present. If extremely high boiling or unusual impurities are present in the AMS, this test method would not necessarily detect them and the purity calculation would be erroneous.View Less
1.1 This test method covers the determination of the purity of AMS (α-methylstyrene) by gas chromatography. Calibration of the gas chromatography system is done by the external standard calibration technique.
1.2 This test method has been found applicable to the measurement of impurities such as cumene, 3-methyl-2-cyclopent
TABLE 1 Summary of Precision Data (mg/kg)
|Compound|| Repeatability (
| Reproducibility (
|Acetone||1.61 + 0.035*Acetone||0.47 + 1.10*Acetone||0.5 - 26|
|Cumene||−0.46 + 0.031*Cumene||7.88 + 0.19*Cumene||45 - 290|
|2.11 + 0.03*NPB||−7.81 + 0.37*NPB||55 - 195|
|Phenol||1.84||3.65 + 0.58*Phenol||1 - 40|
|−1.22 + 0.035*TBB||3.63 + 0.087*TBB||150 - 650|
|4.23 + 0.019*SBB||21.60 + 0.25*SBB||200 - 765|
|0.31 + 0.035*mCymene||2.34 + 0.35*mCymene||2 - 50|
|1.63||8.00||29 - 31|
|5.12||15.79||10 - 18|
|0.17 + 0.030*CPB||5.39 + 0.11*CPB||50 - 225|
| trans-2-Phenyl-2-But||1.57||0.54 + 0.20*TPB||19 - 70|
|1-Phenyl-1-Butene (PB)||4.00 + 0.018*PB||0.17 + 0.19*PB||0.2 - 735|
|Acetophenone (AP)||-1.09 + 0.15*AP||1.17 + 0.63*AP||15 - 115|
| para-tert-Butylcatec||2.21||17.82||10 - 19|
|2-Methylbenzofuran (MBF)||0.33 + 0.76*MBF||0.75 + 0.60*MBF||1 - 2|
|2-Phenylpropion aldehyde (PPA)||0.59 + 0.11*PPA||0.29 + 0.23*PPA||1.5 - 15|
|α-Methylstyrene Oxide (AMSO)||4.61||6.51 + 0.23*AMSO||13 - 32|
|DimethylBenzyl Alcohol (DMBA)||0.38||0.55 + 2.03*DMBA||0.1 - 1|
1.3 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.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 This standard does not purport to address all 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 hazard statements, see Section 8.