Phel red indicator , 0.5%（w/v）inwater , 143-74-8

Synonym(s):
Phenol red;Phenolsulfonphthalein;Phenolsulfonphthalein solution

CAS NO.：143-74-8

Empirical Formula: C19H14O5S

Molecular Weight: 354.38

MDL number: MFCD00003552

EINECS: 205-609-7

PRODUCT Properties

• Melting point: >300 °C
• Boiling point: >300°C
• Density: 1.445 Mg m-3
• refractive index: 1.5300 (estimate)
• Flash point: >300°C
• storage temp.: no restrictions.
• solubility: 1 M NaOH: soluble1mg/mL
• form: Solid
• pka: 7.9(at 25℃)
• color: Red
• PH Range: 6.6(YELLOW)-8.0(RED)
• Odor: Odorless
• PH: 6.8～8.4
• Water Solubility: 0.77 g/L
• λmax: 557nm, 558nm, 360nm, 423nm, 433nm
• Merck: 14,7247
• BRN: 326470
• Major Application: Display device, sol-gel matrix, photoreceptors, fuel cells, waveguides, paints, detergents, cosmetics, antiperspirant composition, diapers, screening bacteria, detecting viable cells, diagnosis of urogenital ureaplasmosis, treatment of pathogen infections, amyloid-associated diseases, glaucoma, pulmonary hypertension, asthma, chronic obstructive pulmonary disease, erectile dysfunction, Raynaud’s syndrome, heparin overdose, vulvodynia, wound healing, psychoactive drugs, evaluating dental caries activity
• InChIKey: BELBBZDIHDAJOR-UHFFFAOYSA-N
• LogP: 3.020
• CAS DataBase Reference: 143-74-8(CAS DataBase Reference)
• EPA Substance Registry System: Phenol Red (143-74-8)

Description and Uses

Phenol red belongs to the class of triphenylmethane dyes and is widely used in the textile industry.

As indicator in 0.02-0.05% alcohol solution. pH 6.8 yellow, 8.4 red.

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: 37/39-26-45-36/37/39-27
• WGK Germany: 3
• RTECS: SJ7490000
• TSCA: Yes
• HS Code: 29349990
• Toxicity: LD50 orl-rat: >600 mg/kg CTOXAO 4(2),185,71