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Food additives data book - wordpres

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Gases 562<br />

NAME: Hydrogen<br />

CATEGORY: Packaging gas<br />

SYNONYMS: Protium<br />

FORMULA: H2<br />

MOLECULAR MASS: 2.01588<br />

PROPERTIES AND APPEARANCE: Colourless, odourless, tasteless gas<br />

BOILING POINT IN °C AT VARIOUS -252.77<br />

PRESSURES (INCLUDING 760 mm Hg):<br />

MELTING RANGE IN °C: -259.34<br />

DENSITY AT 20°C (AND OTHER 0.08987<br />

TEMPERATURES) IN g/l:<br />

SOLUBILITY % AT VARIOUS TEMPERATURE/pH COMBINATIONS:<br />

in water: @ 0°C 2.14 @ 20°C 2.0 @ 25°C 1.91 @ 50°C 1.89<br />

in ethanol solution: @ 100°C 6.925<br />

REFERENCE: Merck Index, Twelfth Edition (1996) Merck & Co., Inc., Whitehouse Station, NJ, USA.

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