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Food additives data book - wordpres

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Preservatives 798<br />

NAME: Potassium nitrite<br />

CATEGORY: Antimicrobial preservative<br />

FOOD USE: Cured meats/ Meat products/ Fish products<br />

SYNONYMS: Nitrous acid potassium salt/ E249/ CAS 7758-09-0/ EINECS 231-832-4<br />

FORMULA: KNO2<br />

MOLECULAR MASS: 85.10<br />

ALTERNATIVE FORMS: Sodium nitrite<br />

PROPERTIES AND APPEARANCE: White or slightly yellow deliquescent granules or rods<br />

BOILING POINT IN °C AT VARIOUS decomposes @ 320<br />

PRESSURES (INCLUDING 760mmHg):<br />

MELTING RANGE IN °C: 441 (decomposition starts at 350)<br />

DENSITY AT 20°C (AND OTHER 1.915<br />

TEMPERATURES) IN g/l:<br />

PURITY %: 90<br />

HEAVY METAL CONTENT MAXIMUM IN 0.002%, not more than 10ppm Pb<br />

ppm:<br />

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

in water: @ 0°C 281 @ 100°C 413<br />

in ethanol solution: @ 5% Soluble @ 20% Soluble @ 95% Soluble @ 100% Soluble<br />

FUNCTION IN FOODS: Antimicrobial preservative; colour fixative; flavour enhancer<br />

ALTERNATIVES: Multifunctional, so requires a blend of <strong>additives</strong>

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