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This specification establishes the requirements for AMS (alpha-Methylstyrene). Sampled specimens shall conform to the following physical and chemical properties: minimum AMS content; maximum phenol content; maximum polymer content; inhibitor content; appearance; and color (Pt-Co units).
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.2 The following applies to all limits in this specification: for purposes of determining conformance with this specification, an observed value or a calculated value shall be rounded off “to the nearest unit” in the last right-hand digit used in expressing the specification limit, in accordance with the rounding-off method of Practice E29.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D1209 Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)
D2121 Test Methods for Polymer Content of Styrene Monomer and AMS (-Methylstyrene)
D3160 Test Method for Phenol Content of Cumene (Isopropylbenzene) or AMS (-Methylstyrene)
D3437 Practice for Sampling and Handling Liquid Cyclic Products
D4590 Test Method for Colorimetric Determination of p-tert-Butylcatechol In Styrene Monomer or AMS (-Methylstyrene) by Spectrophotometry
D5386 Test Method for Color of Liquids Using Tristimulus Colorimetry
D6144 Test Method for Analysis of AMS (-Methylstyrene) by Capillary Gas Chromatography
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
ICS Number Code 75.080 (Petroleum products in general)
UNSPSC Code 12352005(Aromatic or heterocyclic compounds)
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ASTM D6367-12, Standard Specification for AMS (α-Methylstyrene), ASTM International, West Conshohocken, PA, 2012, www.astm.orgBack to Top