Viscosity and Chemical Constitution

Souders, Mott

doi:10.1021/ja01268a048

Cited by 48 publications

(18 citation statements)

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“…The values of Souders' viscosity function24 were calculated (Table II) for the esters (I and II) of lactic acid; the I values calculated from the formula / = j logio (logio») + 2.9 where = molecular weight, d = density and = viscosity agreed moderately well with those estimated from the atomic and group increments. 24 In agreement with Lagemann,25 the ratios between the I values and molecular refraction were approximately 12. * 10 4 ( = boiling point at 10 mm., °K.).…”

Section: Tetrahydrofurfuryl Esterssupporting

confidence: 77%

n-Alkanoyl Derivatives of n-Butyl and Tetrahydrofurfuryl Lactates

Fein¹,

Fisher²

1948

J. Am. Chem. Soc.

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Vol. 70 was made basic with 20% sodium hydroxide solution. The base was taken up in ether and the solution was dried over anhydrous magnesium sulfate. The solvent was removed by vacuum distillation at 30-35°. Immediately before using the residual oil in the condensation reaction, a sample was withdrawn and converted to the picrate, (m. p. 158-160°). After crystallization from alcohol, the melting point was 166-167°. Therefore, the chloroamine added to the reaction was 2-dimethylamino-lchloropropane. Summary l-Dimethylamino-2-chloropropane and 2-di-methylamino-1 -chloropropane were prepared from the corresponding dimethylaminopropanols by the action of thionyl chloride.2-Dimethylamino-1 -chloropropane, either as the free base or as the hydrochloride, rearranges on heating into l-dimethylamino-2-chloropropane which is thermally stable.Both chloroamines reacted with diphenylacetonitrile to give the same mixture of isomeric aminonitriles. Glbnoldbn, Pa.

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Section: Tetrahydrofurfuryl Esterssupporting

confidence: 77%

n-Alkanoyl Derivatives of n-Butyl and Tetrahydrofurfuryl Lactates

Fein¹,

Fisher²

1948

J. Am. Chem. Soc.

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“…Hitherto all of them involve some other physical property and no relation has been developed by which the viscosity can be estimated from the chemical constitution alone. Reid and Sherwood (1966) judge the methods of Souders (1938), Thomas (1946, andThodos (1961, 1964) as the three best estimations available. These three methods will be used as a basis of comparison for the relation proposed by the authors.…”

Section: Effect Of Chemical Constitutionmentioning

confidence: 99%

A Liquid Viscosity-Temperature-Chemical Constitution Relation for Organic Compounds

Velzen¹,

Cardozo²,

Langenkamp³

1972

Ind. Eng. Chem. Fund.

145

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A new empirical relation between liquid dynamic viscosity, temperature, and chemical constitution of organic compounds is proposed. The method is based on the De Guzman-Andrade equation and the introduction of a new property, the equivalent chain length of a compound, defined as the chain length (in carbon atoms) of the hypothetical n-alkane having a viscosity equal to 1 cP at the same temperature as the compound in question. Cumulative constitutional correction factors for the equivalent chain length and the slope of the log viscosity-temperature curve are proposed. With the aid of these data, the viscosity between boiling and melting points of many compounds can be predicted. The method proves to be more accurate than the existing ones and it does not make use of any other physical property.

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“…In 1938, Souders (4) showed that the following relation exists between viscosities and densities for a wide variety of organic fluids.…”

Section: Viscosity and Structurementioning

confidence: 99%

“…These physical data were used with Eqs. [4] and [6] for the calculation of the R and I values presented in Table 7 and Fig . 4.…”

Section: Glycol Ethersmentioning

confidence: 99%

Viscosity and Chemical Structure of Polymers

Sargent

1969

A S L E Transactions

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A technique is described which has beenfound useful for understanding the role played by molecular structure in the viscosiry of liquid polyisobutylene polym ers. A linear logarithmic relation, between the oiscosity and the average molecular weight oflow molecular weight polyisobutylenes, is demonstrated. Th is relationship is used to indicate an apparent difference in the molecular structures of some polyisobuty lenes.A linear relation also exists between the molar refraction and a uiscosity-constitutional constant in several homologous series ofpolymers which is useful fo r classification purposes.

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Viscosity and Chemical Constitution

Cited by 48 publications

References 0 publications

n-Alkanoyl Derivatives of n-Butyl and Tetrahydrofurfuryl Lactates

n-Alkanoyl Derivatives of n-Butyl and Tetrahydrofurfuryl Lactates

A Liquid Viscosity-Temperature-Chemical Constitution Relation for Organic Compounds

Viscosity and Chemical Structure of Polymers

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