Kwas L-(+)-winowy ExpertQ® do analizy, ACS, ISO, Reag. Ph Eur – Scharlau

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PRODUCENT: SCHARLAB

L(+)-Tartaric acid, ExpertQ®, ACS, ISO,

– Synonyms: 2,3-Dihydroxybutanedioic acid
– C4H6O6
– M = 150,09 g/mol
– CAS [87-69-4]
– EINECS-No.: 201-766-0
– Solub. in water: (20 ºC): soluble
– Melting point: 170 ºC
– Ignition temp.: 425 ºC
– GHS-signal word: Danger
– GHS-H sentences: H318 –
– GHS-P sentences: P280 – P305+P351+P338 – P310 –
– Tariff number: 2918 12 00 00
– Applications: in food industry, acidifying agent, photography, cosmetics, in porcelain industry, in the textile industry, in buffer solutions (for pharmaceutical use).

SPECIFICATIONS
assay (acidimetric): min. 99,5 %
assay (acidimetric, on dried sample): 99,5 – 101,0 %
identification: passes test
appearance of solution: passes test
insoluble in water: max. 0,005 %
specific rotation ([a]20°/D, c=20, H2O on dried sample): + 12,0 º – + 12,8 °
chlorides (Cl): max. 5 ppm
phosphates (as PO4): max. 0,001 %
sulfates (SO4): max. 150 ppm
calcium (Ca): max. 0,002 %
copper (Cu): max. 5 ppm
heavy metals (as Pb): max. 5 ppm
iron (Fe): max. 5 ppm
lead (Pb): max. 5 ppm
oxalic acid (C2H2O4): max. 360 ppm
oxalates (C2O4): passes test:
sulphur compounds (as SO4): max. 0,002 %
residue on ignition (EP): max. 0,1 %
residue on ignition (ISO): max. 0,01 %
residue on ignition (ACS): max. 0,02 %:
loss on drying (105 ºC): max. 0,2 %