ASTM-D1016 › Historical Revision Information
Standard Test Method for Purity of Hydrocarbons from Freezing Points
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Scope
1.1 This test method covers the sampling and determination of purity of essentially pure compounds for which the freezing points for zero impurity and cryoscopic constants are given. The compounds to which the test method is applicable are: (Warning
n-butane 1,3-butadiene isobutane isoprene(2-methyl-1,3-butadiene) n-pentane benzene isopentane toluene (methylbenzene) n-hexane ethylbenzene n-heptane o-xylene (1,2-dimethylbenzene) n-octane m-xylene (1,3-dimethylbenzene) 2,2,4-trimethylpentane p-xylene (1,4-dimethylbenzene) methylcyclohexane styrene (ethenylbenzene) isobutene
1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.
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. For specific hazard statements, see Sections 1, 6, 8, and 10-26. Note 1—This test method covers systems in which the impurities form with the major component a substantially ideal or sufficiently dilute solution, and also systems which deviate from the ideal laws, provided that, in the latter case, the lowering of the freezing point as a function of the concentration is known for each most probable impurity in the given substance.
Significance and Use
The experimental procedures and physical constants provided by this test method, when used in conjunction with Test Method D1015, allow the determination of the purity of the material under test. A knowledge of the purity of these hydrocarbons is often needed to help control their manufacture and to determine their suitability for use as reagent chemicals or for conversion to other chemical intermediates or finished products.
Keywords
crystallization; freeze point; LPG; pure hydrocarbons; purity; ICS Number Code 71.080.01 (Organic chemicals in general)
To find similar documents by ASTM Volume:
05.01 (Petroleum Products and Lubricants (I): D56 - D3710)
To find similar documents by classification:
71.080.01 (Organic chemicals in general)
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Document Number
ASTM-D1016-05(2010)
Revision Level
2005 R10 EDITION
Status
Superseded
Modification Type
Reapproval
Publication Date
May 1, 2010
Document Type
Test Method
Page Count
13 pages
Committee Number
D02.04.0D