✦ LIBER ✦

Spontaneous fracture of coal

✍ Scribed by Robert G. Aldrich

Book ID: 103092278
Publisher: Elsevier Science
Year: 1977
Tongue: English
Weight: 148 KB
Volume: 56
Category: Article
ISSN: 0016-2361
DOI: 10.1016/0016-2361(77)90023-0

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✦ Synopsis

form molecular aggregates even in dilute solution and this association is influenced by solvent polarity, asphaltene concentration and the temperature of the determination. Tab/e 2 Relation of asphaltene molecular weight to asphaltene concentration (solvent: benzene) Method VPoa Cryoscopicb Concentration (%) 1.7 3.0 4.2 7.3 9.6 12.5 Molecular weight 6290 6070 6440 8120 10040 10910 i Inaccurate >7% asphaltenes owing to instrument sensitivity Inconsistent <7% asphaltenes (for benzene)

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