CERTIFICATE OF ANALYSIS

Product Name	INDIGO CARMINE AR	CAS Number	860-22-0
Molecular Formula	C 16 H 8 N 2 Na 2 O 8 S 2	Catalogue No.	AL2546
Molecular Weight	466.36	Batch Number
Manufacturing Date	December-2020	Expire Date	November-2025

TYPE OF TEST	STANDARD	OBSERVED
Description Absorption maxima in water Absorptivity (A 1%/ 1cm: @ ? max; in water; on dried substance) Loss on drying (105°C) Suitability for microscopy	Dark blue-violet powder having a metallic luster of copper. 608 – 612 nm 380 - 475 <6.0% Passes test	Dark blue-violet powder having a metallic luster of copper. 610 nm 418 3.78% Passes test

Result: The above product complies with AR grade

Tested By
Hitesh Kunjathur

Analysed By
Preeti Rane