PRODUCT CODE:

123575

Calconcarboxylic Acid (Reag. Ph. Eur.) PA
for complexometry

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C₂₁H₁₄N₂O₇S

M.= 438,42	CAS [3737-95-9]	EINECS 223-117-0
NC 2927 00 00

SYNONYMS: Patton and Reeder reagent ·
PHYSICAL DATA: Dark violet powder · Solubility in water 8 g/l. In alcohol 10 g/l · Insoluble in ether ·
APPLICATIONS: Analytical reagent: RFE I ·BP 2000 ·Ph. Eur. V ·Complexometric indicator for determination of Ca in the presence of Mg and other metals; J. Patton , W. Reeder , Anal. Chem., 28, 1028 (1956) ; P. and A. Prentoe , Analyst.,106 , 227 (1981) ·
BIBLIOGRAPHY: Conn’s IX , 364 · Beilstein 16, IV, 408 · BRN: 727492 ·

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SPECIFICATIONS:

Identity	IR p/t.
l of max. ABS in C2H5OH	569-572 nm
A 1%, 1cm, lmax	>250
T.L.C	p/t.
MAXIMUM LIMIT OF IMPURITIES
Loss on drying at 135°C	6-9 %
Suitability as compl.indicator of Ca	p/t.