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Sigma-Aldrich Phenol Red A.C.S. Reagent
List Price $92.20 Your Price $92.20
Sigma-Aldrich Phenol Red A.C.S. Reagent - SIAL (Additional S&H Or Hazmat Fees May Apply)
NETA PART: SIAL-114529-25G
MFG.PART: 114529-25G
UNSPSC: 12171500
Manufacturer: Sigma-Aldrich
grade
ACS reagent
Quality Level
200
form
powder
clarity of soln
passes test
technique(s)
titration: suitable
visual transition interval
6.8-8.2, yellow to red
solubility
water: 0.77 g/L at 100 °C
λmax
360 nm
557 nm (2nd)
ε (extinction coefficient)
≥10000 at 288-294 nm in H2O
≥55000 at 555-561 nm in H2O
≥7000 at 357-363 nm in H2O
application(s)
diagnostic assay manufacturing
hematology
histology
Related Categories
Hematology Stains
General description
Phenol Red is a phenolsulfonphthalein compound. It is present as a sulfonated hydroxyquinone in weakly acidic aqueous solutions. In alkaline solutions, the dye forms a hydrophilic dianion (a small, red anion that has a larger conjugated system than the yellow hydroxyquinone).
Application
Phenol red is commonly used as a pH indicator in biology and medicine. It is incorporated into microbiological culture media for the identification of Escherichia coli strains. Its clinical diagnostic applications include the investigation of gastric and duodenal ulcers and the assessment of tear function in ophthalmology. Phenol red is also used as a tracer to assess the permeability of the ileal mucosal membrane and to assess bacterial leakage through root-filling materials in dentistry.
Phenol Red has been used for the preparation of phenol red gavage meal for measurement of gastric emptying in rats.[1]
Phenol Red has been used for the preparation of phenol red gavage meal for measurement of gastric emptying in rats.[1]
Suitable for use as a pH indicator.
Biochem/physiol Actions
Phenol Red is a pH indicator which changes color from yellow to red.[2]
pictograms
GHS07
signalword
Warning
hcodes
H315,H335
pcodes
P261 - P264 - P271 - P280 - P302 + P352 - P304 + P340 + P312
Hazard Classifications
Skin Irrit. 2 - STOT SE 3
target_organs
Respiratory system
wgk_germany
WGK 3
PPE
dust mask type N95 (US), Eyeshields, Gloves
| SKU | SIAL-114529-25G |
|---|---|
| Supplier Part Number | 114529-25G |
| UM | EA |
| UNSPSC | 12171500 |
| Manufacturer | Sigma-Aldrich |
| Temperature | room temp |
| Refrigerated-Frozen | N |
| ProductLine | SIAL |
| Qty | 1 |
| MinOrderQty | 1 |
| Weight | 10.000000 |
| Lead Time | 9 |
| Hazardous | Y |
| CAS Number | 143-74-8 |
| Energy Star | No |
| Green | No |
| Controlled | N |