Phenol Red sodium salt , AR , 34487-61-1

Synonym(s):
Phenol red sodium salt;Phenolsulfonephthalein sodium salt

CAS NO.：34487-61-1

Empirical Formula: C19H13NaO5S

Molecular Weight: 376.36

MDL number: MFCD00066901

EINECS: 252-057-8

PRODUCT Properties

• Melting point: 285 °C (dec.)(lit.)
• Boiling point: 285 °C
• Density: 0.972
• storage temp.: room temp
• solubility: H₂O: clarity passes test
• pka: 7.69, 7.9, 1.3(at 25℃)
• form: Shiny Powder
• color: White
• Odor: Odorless
• PH Range: Yellow (6.8) to red (8.4)
• Water Solubility: soluble
• λmax: 423nm, 557nm
• ε(extinction coefficient): ≥19000 at 422-426nm in methanol; ≥900 at 256-269nm in methanol
• Merck: 14,7247
• BRN: 6260026
• Stability: Stable. Incompatible with strong oxidizing agents.
• Major Application: Sensor, optical device, paints, sterilization process, fertilizer, detecting viable cells, gastrointestinal mucosa, antibacterial agent, drugs, pharmacology
• CAS DataBase Reference: 34487-61-1(CAS DataBase Reference)
• EPA Substance Registry System: Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis-, monosodium salt (34487-61-1)

Description and Uses

Phenol Red Sodium Salt is a water soluble pH indicator commonly employed in cell biology laboratories as a cell tissue culture pH marker. Phenol Red sodium salt is a water soluble pH indicator used in the 6.8 (yellow) to 8.2 (red) range. It is commonly employed in cell biology laboratories as a cell tissue culture pH marker. Under normal conditions, phenol red added to the growth medium will have a pink-red color. Usually 15 mg/l is used to produce this effect. If problems arise, such as dying cells or overgrowth of contaminants, this will cause a change in pH resulting in a change in indicator color. This color change is an indication that the medium needs to be replaced. Additionally, Phenol Red could potentially be useful as a differentiation factor. It can also be used as reactant/reag

Safety

• Symbol(GHS): GHS07
• Signal word: Warning
• Hazard statements: H315-H335
• Precautionary statements: P261-P264-P271-P280-P302+P352-P304+P340+P312
• Hazard Codes: Xi,C
• Risk Statements: 36/37/38-34
• Safety Statements: 26-36-37/39-45-36/37/39-27
• WGK Germany: 3
• TSCA: Yes
• HS Code: 29349990