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Sodium metabisulphite USP-NF/Ph.Eur 500GM
91630SG500273387117KR
USP/Ph.Eur2733871
7681-57-449653
Na2S2O5November 2018
190.1October 2021
Sr.No.TestResultSpecification
1DescriptionWhite crystalline powderWhit or almost white to yellowish, crystalline powder or colourless crystals. (USP-NF/Ph.Eur)
2SolubilityPassesFreely soluble in water and in glycerin. Slightly soluble in ethanol (96%) and in alcohol. (USP-NF/Ph.Eur)
3Identification A (By pH)4.193.5 -5.0 (Ph.Eur)
4Identification B (By Chemical test)CompliesThe solution is colourless and gives reaction (a) of sulphates. (Ph.Eur)
5Identification C (By Chemical test)CompliesSolution S gives reaction (a) of sodium (Ph.Eur)
6Identification ACompliesA solution (1 in 20) gives reaction of sodium (USP-NF)
7Identification BCompliesA solution (1 in 20) gives reaction of sulphite (USP-NF)
8Appearance of solutionPassesSolution S is clear and colourless. (Ph.Eur)
9pH(5% aq soln)4.193.5 - 5.0 (Ph.Eur)
10Thiosulphate(S2O3)PassesThe solution remains clear for at least 15min. (Ph.Eur)
11Limit of ThiosulfateLess than 0.05%0.05% max (USP-NF)
12Arsenic (As)Less than 4ppm4ppm max (IP)
13Iron (Fe)Less than 20ppm20ppm max (USP-NF/Ph.Eur)
14Heavy metalsLess than 20ppm20ppm max (USP-NF/Ph.Eur)
15Chloride (Cl)Less than 0.05%0.05% max (USP-NF)
16Assay(as SO2)65.10%Between 65.0% w/w & 67.4% w/w of sulfur dioxide equivalent to sodium metabisulfite. (USP-NF)
17Assay96.6%95.0% - 100.5% (Ph.Eur)
Remarks: THE CAPTIONED MATERIAL COMPLIES WITH THE PRESCRIBED QUALITY OF USP AND PH.EUR SPECIFICATION.
FINAR provides this analytical report in good faith and to the best of its knowledge. It should not be substituted for the users own raw material quality control.
Tested By
(Chemist - Quality Control)
Approved By
(Head - Quality Control)
Computer Generated Report - Does not require Signature.
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