ACID RED 92 ( PHLOXINE B ) Extra Pure quality ( Equivalent to Japanese quality )

CHEMICAL NAME : 2’, 4’,5’,7’ TETRABROMO, 4,5,6,7 TETRACHLORO, 3', 6’-DIHYDROXY - SPIRO ( ISOBENZOFURAN-1(3H), 9' -(9H) XANTHEN)-3-O N E,DISODIUM SALT

CAS NO. : 18472-87-2

C.I.NO. : 45410

GENERIC NAME : ACID RED 92

MOLECULAR FORMULA : C20H2O5Br4Cl4Na2

MOLECULAR WEIGHT : 829.92gm/mol

Physical appearance : Dark Reddish Powder

Odor : Odorless

Solubility : Good ( Bright Red Clear )

Insoluble : 0.20% ( Nil )

pH : 8.2 (± 0.2 ) ( in 1% Aquesous Soln. )

Dye Content : 92.10%

Heavy Metal

Lead : 20ppm ( Pass )

Arsenic : 3ppm ( Not detected )

Mercury : 1ppm ( Not detected )

Loss on Drying : 1.69% ( Limit 5% Maximum )

Chloride & Sulphate : 5% Maximum

2-(6-Hydroxy-3-oxo-3H Xanthen-9- : 1% Max

Yl benzoic acid ) 2-(Bromo-6-Hydroxy-3-oxo-3H Xanthen-: 2% Max. 9-yl )

ACID RED 92 ( OTHER QUALITY )

SALES SPECIFICATION

DESCRIPTION : REDDISH BROWN POWDER

SOLUBILIT Y OF 1 % : CLEAR AND RED, FREE FROM ANY SUSPENDED SOLUTION IN D.W.

DYE CONTENT : > 90 %

ABSORPTION MAXIMA : 537-539 nm ( DISTILL WATER pH = 7 )λ m a x

ABSORPTIVITY : 1098-1220 ( A 1%, 1cm in DISTILL WATER pH =7 at λ max )

LOSS ON DRYING : < 5 % ( 110° C for 1hr )

pH 2% SOLUTION IN : 7 - 8 DISTILL WATER pH = 7

WATER IN SOLUBLE : 0.2 % MATTER

CHLORIDE : 1%

LEAD : <20 ppm

ARSENIC : <3 ppm

PARTICLE SIZE : 100% PASSES THROUGH 100 MESH SIZE