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Significance and Use
5.1 Methanol is a common impurity in propylene concentrate. It can have a deleterious effect on various processes that use propylene concentrate as a feedstock.
1.1 This test method covers the determination of methanol in propylene concentrates in the range of approximately 4 mg/kg to 40 mg/kg (parts-per-million by mass).
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
Note 1: There is no direct acceptable SI equivalent for screw threads.
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. Specific warning statements are given in , , and .
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D4307 Practice for Preparation of Liquid Blends for Use as Analytical Standards
E260 Practice for Packed Column Gas Chromatography
ICS Number Code 71.080.10 (Aliphatic hydrocarbons)
UNSPSC Code 15111503(Propylene)