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ACID RED 33 excellent quality  manufacturer, exporter and supplier. Acid Red 33 is widely used in processing of xylenlol orange, redox indicator and anti-oxidents.  Its chemical name is Disodium salt of 5-amino-4-hydroxy-3-(phenylazo)-2,7- naphthalenedisulfonic acid.
Generic Name:
D&C Red 33
Article News:
Packing Size:
0.00 Box
Most common colour indicator for Soap, shampoo, bubble bath, topically applied drugs and Nylon 66 and Nylon 6 sutures.
Using Procedure:
CAS no : 3567-66-6
ACID RED 33 is Soluble in water, slightly soluble in ethanol for scarlet. ACID RED 33 with concentrated sulfuric acid in scarlet, diluted for orange red. ACID RED 33 in nitric acid solution resul palm c [+] Read More...
Technical Specifications:
C.A.S. No. 3567-66-6
CI NO. 17200
M.F. C16H11N3Na2O7S2
M.W. 467.39gm/mole



Solubility 0.1% (Dist. Water) Clear solution
Absorptivity (A1%, 1cm in Water, at ?max 530.0nm >650
Loss On Drying (110°C) >5%


Other Valuable INDICATORS

Alcian Blue 8 Gx  
Alizarin Red S  
Basic Fuchsin
Bromo Thymol Blue
Bromo Xylenol Blue
Bromo Cresol Green
Fluorescien Complexone
Methyl Red
Nitrazine Yellow
Phenol red
Safranine O
Thymol Blue

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