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molecular formula: nacl
molecular weight: 58.44
cas no: 7647-14-5
properties: white crystal or crystalline powder. relative density is 2.165, melting point is 801℃, boiling point is 1413℃. soluble in water and glycerin, slightly soluble in ethyl alcohol and liquid ammonia.
uses: as analytical reagent. it can be used in pharmaceutical, biological medium and other fields.
standard: maximum assay of impurities is in %
| specification/item |
analytically pure-ar
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chemically pure-cp
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assay(nacl) /%
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≥99.5
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≥99.5
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water solution reaction
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qualified
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qualified
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clarity test
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qualified
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qualified
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water insoluble matter
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≤0.005
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≤0.02
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drying loss
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≤0.5
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≤0.5
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iodide (i)
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≤0.002
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≤0.012
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bromide(br)
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≤0.01
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≤0.05
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sulfate (so4)
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≤0.002
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≤0.005
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nitrogen compounds (n)
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≤0.001
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≤0.003
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phosphate (po4)
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≤0.001
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－
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magnesium (mg)
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≤0.002
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≤0.005
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potassium (k)
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≤0.02
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≤0.04
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calcium (ca)
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≤0.005
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≤0.01
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ferrocyanide [fe(cn)6]
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≤0.0001
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－
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iron (fe)
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≤0.0002
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≤0.0005
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arsenic (as)
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≤0.00005
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≤0.0001
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barium (ba)
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≤0.001
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≤0.001
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heavy metal (pb)
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≤0.0005
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≤0.001
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packing: woven bag lined with plastic bag, kraft paper bag, or fiber drum, net weight is 25kg.
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