Eosine Yellow Indicator 25Gram

PRODUCT CODE 293725
SYNONYMS (Eosin G; Acid Red 87)
C.I. NO. 45380
CASR NO. (17372-87-1)
ATOMIC OR MOLECULAR FORMULA C20H6Br4Na2O5
ATOMIC OR MOLECULAR WEIGHT 691.88
PROPERTIES Indicator and Microscopic stain.

PARAMETER LIMIT
Description Red powder with a bluish tinge or brownish-red powder
Solubility 0.05% solution in water should be clear and complete.
Dye Content (Gravimetric;
on dried substance)
About 88.0%
Absorption Maximum
(in water+1 ml 1% Na2CO3)
515 - 518 nm
Absorption Ratio
(A λ max - 15 nm)
----------------------
(A λ max + 15 nm)
1.21 - 1.77
Absorptivity (A1% / 1 cm at
λ max, in water + 1 ml 1% Na2CO3)
1200 - 1400
Suitability for microscopy To pass the test