PHENOL RED
PHENOL RED AR/ACS
pH Indicator
Short Name: PHENOL RED
Synonym: Phenolsulfonphthalein
Basic Details
Article No.
LG3471
Grade
AR/ACS
Purity
CAS No.
143-74-8
HS Code
2934.9900
Shelf Life
60 Months
Packings Avialable
Physical Properties
Physical state at 20 °C
Solid
Colour
Dark red powder
Odour
Odorless
Solubility in water [% weight]
Slightly soluble in water
Chemical Specifications
Appearance
Reddish powder
Visual transition range
From pH 6.8 (Yellow) - 8.2 (Red)
Absorption maxima at pH 6.5 (λ1)
430 - 435 nm
Absorption maxima at pH 8.2 (λ2)
557 - 560 nm
Loss on drying (at 110°C)
Max 5.0%
Clarity of solution
Passes ACS test
Safety Information & Hazard Symbols
Symbol
GHS07
Signal Word
Warning
Hazardous Statement
H315-H319-H335
Precaution Statement
P261-P305 + P351 + P338