143-74-8
Product Name:
Phenol Red
Formula:
C19H14O5S
Synonyms:
Phenol red;Phenolsulfonphthalein;Phenolsulfonphthalein solution
Inquiry
CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Odorless, red solid; Available as pure compound, soluble monosodium salt, and dilute solutions; [CHEMINFO] |
|---|---|
| Chemical Classes | Dyes -> Indicator Dyes |
SAFETY INFORMATION
| Signal word | Warning |
|---|---|
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. |
COMPUTED DESCRIPTORS
| Molecular Weight | 354.4 g/mol |
|---|---|
| XLogP3 | 3 |
| Hydrogen Bond Donor Count | 2 |
| Hydrogen Bond Acceptor Count | 5 |
| Rotatable Bond Count | 2 |
| Exact Mass | 354.05619472 g/mol |
| Monoisotopic Mass | 354.05619472 g/mol |
| Topological Polar Surface Area | 92.2 Ų |
| Heavy Atom Count | 25 |
| Formal Charge | 0 |
| Complexity | 545 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 1 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
Phenol red is 3H-2,1-Benzoxathiole 1,1-dioxide in which both of the hydrogens at position 3 have been substituted by 4-hydroxyphenyl groups. A pH indicator changing colour from yellow below pH 6.8 to bright pink above pH 8.2, it is commonly used as an indicator in cell cultures and in home swimming pool test kits. It is also used in the (now infrequently performed) phenolsulfonphthalein (PSP) test for estimation of overall blood flow through the kidney. It has a role as a two-colour indicator, an acid-base indicator and a diagnostic agent. It is a 2,1-benzoxathiole, a member of phenols, a sultone and an arenesulfonate ester.