Kwas cytrynowy monohydrat ExpertQ® do analizy, ACS, ISO, Reag.Ph Eur – Scharlau

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PRODUCENT: SCHARLAB

Citric acid monohydrate, ExpertQ®, ACS,

– Synonyms: 2-Hydroxy-1,2,3-propanetricarboxylic acid monohydrate, b-Hydroxytricarballylic acid monohydrate
– C6H8O7·H2O
– M = 210,14 g/mol
– CAS [5949-29-1]
– EINECS-No.: 201-069-1
– Solub. in water: (20 ºC): very soluble in water
– Melting point: 135 – 152 ºC
– Boiling point: 135 – 152 ºC (decomposes)
– Ignition temp.: 345 ºC
– Vapour pressure: (20 ºC) < 0,1 hPa - LD 50 (oral, rat): 3000 mg/kg - GHS-signal word: Warning - GHS-H sentences: H319 - GHS-P sentences: P280 - P264 - P305+P351+P338 - P337+P313 - Tariff number: 2918 14 00 00 - Applications: analytical chemistry, laboratory reagent, in buffer solutions. SPECIFICATIONS assay (acidimetric): 99,5 - 100,5 % dried sample): 99,5 - 100,5 % identity (IR-spectrum): passes test appearance of solution : passes test insoluble in water: max. 0,005 % chlorides (Cl): max. 5 ppm phosphates (as PO4): max. 0,001 % oxalates (C2O4): passes test sulfates (SO4): max. 0,002 % oxalic acid (C2H2O4): max. 360 ppm sulphur compounds (as SO4): max. 0,002 % calcium (Ca): max. 10 ppm copper (Cu): max. 5 ppm iron (Fe): max. 3 ppm lead (Pb): max. 2 ppm magnesium (Mg): max. 10 ppm nickel (Ni): max. 1 ppm readily carbonizable substances: passes test residue on ignition: max. 0,02 % water (K.F.): 7,5 - 9,0 suitability for determination of Fe: passes test