CS substance

TABLE 5.2 Substance Melting and Boiling Points of Substances Melting point (°C) Boiling point (°C) Substance Melting point (°C) Boiling point (°C)... 

Extremely inflammable Boiling point equal to or less than 35 "Q I flashpoint less than 0 C. substances and gaseous preparations which, at ambient temperature and pressure, are inflammable in air. 

Brundish, D.E. and Baddiley, J. (1968) Pneumococcal C-substance, a ribitol teichoic acid containing choline phosphate. BiochemicalJournal 110, 573-582. 

The purification of a pneumococcal polysaccharide may be difficult, and the polysaccharide material is sometimes contaminated by a cell-wall component known as the C-substance. The methods for structural analysis of polysaccharides (which, like several of the pneumococcal polysaccharides, contain amino sugar and uronic acid... 

The C-substance is a species-specific antigen of Streptococcus pneumoniae that often contaminates the type-specific capsular poly-... 

On deamination, C-substance that had been treated with alkali and phosphatase yielded the disaccharide 2-0-(2-acetamido-2-deoxy-D-galactosyl)-D-ribitol. Periodate oxidation of C-substance had revealed that the ribitol residue is substituted at 0-2 and 0-5. 

From the combined evidence, the tentative structure 42 was proposed for the repeating unit of C-substance. The choline phosphate residue is possibly linked to 0-3 of the 2-acetamido-2-deoxy-D-galac-tose. 

Analysis of the so-called F-substance showed that it contains 6% of fatty acids and, in addition to these, the same components as the C-substance. The earlier observation that these substances are closely related was thus confirmed. 

Note (a) BCF is hioconcentration factor, NOEC is no-observed effect concentration. (b) For marine environmental risk assessment, half-life data in freshwater sediment can be overruled by data obtained under marine conditions. (c) Substances are classified when they fulfil the criteria for all three inherent properties for P, B and T. However, there is certain flexibility for instance in cases where one criterion is marginally not fulfilled but the others are exceeded considerably. (d) R48 Danger of serious damage to health by prolonged exposure. ... 

Vapor pressure Indicates whether a substance may be available for inhalation as a vapor. As a general guide, highly volatile substances are those with a vapor pressure greater than 25 KPa (or a boiling point below 50°C). Substances with low volatility have a vapor pressure of less than 0.5 KPa (or a boiling point above 150°C). 

Substance Water vapour pressure, mmHg (20 C) Substance Water vapour pressure, mmHg (20 C)... 

Table 20.5a Calculation of Overall Air-Water Transfer Velocities for Different Organic Compounds at 25°C Substance-Specific Properties...

Substances A and B combine to make substance C. Substances C and B combine to make substance D. Place the letter of each substance next to the symbol that best describes its atomic or molecular structure ... 

Heidelberger and Aisenberg240 studied the cross-reaction of the Merck and DuPont polyglucoses with antibodies to pneumococcal C-substance and to type-specific polysaccharides. One of the D-glucose polymers (Merck 52R61I) was separated into a series of fractions on the basis of fractionation with alcohol (isopropyl alcohol and ethanol) and with glacial acetic acid, the most insoluble fraction being called A, and the most soluble, E. The yield, analyses, and reactivity of these fractions with Types IX, XII, XX, and XXII antipneumococcal horse sera are presented in Table VII. 

C) Substances contg NC and/or NG cannot be destroyed by drowning because NC NG are insol in w and are dangerous to handle when dry. They can, however, be burned if the operation is conducted as follows ... 

Maxwell, Jane C. Substance Abuse Trends in Texas December 1998. 18 July 2002. . 

Substance Specific Heat (cal/g °C) Substance Specific Heat (cal/g °C)... 

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