PRODUCT CODE:

122053

Calcein PA
for complexometry

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C₃₀H₂₆N₂O₁₃

M.= 622,54	CAS [1461-15-0]	EINECS 215-957-1
NC 3204 16 00

SYNONYMS: Fluorexone · bis-[N,N-bis-(Carboximethyl)Aminomethyl] Fluorescein · Fluorescein Complexone ·
PHYSICAL DATA: Orange powder · Solubility in water 4 g/l. In alcohol 0,6 g/l · M. P.: 300 ºC dec. ·
APPLICATIONS: Reagent for Ca : R. L. Olsen et al. , Talanta , 7 , 187 (1961) ; H. Gibitz , Ärztl. Lab. , 9 , 389 (1963) · Indicator for the complexometric determination of Ca and Mg : B. M. Tucker , Analyst , 82 , 284 (1957) ; R. Pribil , Ibid. , 83 , 188 (1958) ; T. Y. Toribara , L. Koval , Talanta , 7 , 248 (1961) ·Determination of Ca in biological systems : J. F. Dandrowki, C. L. Benson , Clin. Chem. , 18 , 1411 (1972) ; V. C. K. Chiu , D. H. Haynes , J. Byophys , 18 , 3 (1977) ·
BIBLIOGRAPHY: Beilstein 19 , III/IV, 4338 · Conn’s IX , 341 · K. L Cheng et al. , "Handbook of Organic Analytical Reagents", 225-230 , CRC , Boca Raton (Florida) (1982) ·

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SPECIFICATIONS:

Identity	IR p/t.
l of max. ABS. in NaOH 0,002 mol/l	492-500 nm
A 1%, 1cm, lmax	>650
T.L.C	p/t.
MAXIMUM LIMIT OF IMPURITIES
Insoluble matter in NaOH	p/t.
Loss on drying at 135°C	15 %
Suitability as complexometric indicator.	p/t.