Phenol Red CAS 143-74-8
Product Name: Phenol Red
CAS: 143-74-8
MF: C19H14O5S
MW: 354.38
Appearance: Light red or dark red crystalline powder
Assay: 99.0% min
Package: 25kg/fiber drum
[Typical Properties]
With a special odor and is miscible with ethanol, ether, chloroform, and glycerol.
[Specification]
Item | Standard |
Appearance | Light red or dark red crystalline powder |
pH color change ranges | 1.2 (orange) – 3.0 (yellow) |
6.5 (yellow) -8.0 (purple) -8.2 (red) | |
Maximum absorption wavelength (nm) | |
λ1 (pH1.2) | 503-506 |
λ2 (pH3.0) | 430-435 |
λ3 (pH6.5) | 430-435 |
λ4 (pH8.0) | 557-560 |
Mass-absorption coefficient (L/cm·g) | |
α1 (λ1,pH1.2,dry sample) | 110-123 |
α2 (λ2,pH3.0,dry sample) | 60-68 |
α3 (λ3,pH6.5,dry sample) | 62-72 |
α4 (λ4,pH8.0,dry sample) | 115-130 |
Alkali dissolution test | Passed |
Loss on drying | ≤1.0% |
Residue on ignition (as sulfate) | ≤0.2% |
[Usage]
*Raw material for producing phenolic resin and plastics;
*Acid-base indicator;
*Total blood carbon dioxide measurement;
*Indicators for preparing disaccharide iron urea culture medium in bacterial serum testing.
[Storage]
Keep tightly closed.Store in dry and ventilated place.Keep away from fire,heat sources and oxidants.
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