1.11748

Phenol red sodium salt

pH indicator, ACS

• Synonym(s): Phenol red sodium salt
• Empirical Formula (Hill Notation): C₁₉H₁₃NaO₅S
• CAS Number: 34487-61-1
• Molecular Weight: 376.36
• MDL number: MFCD00066901
• UNSPSC Code: 12171502
• EC Index Number: 252-057-8
• NACRES: NA.21

Properties

• product name: Phenol red sodium salt, indicator ACS
• grade: ACS reagent
• Quality Level: 200
• loss: ≤8.0% loss on drying, 110°C
• visual transition interval: 1.2-3.0, brown-orange to yellow(1st transition range); 6.5-8, brownish-yellow to red-violet(2nd transition range)
• mp: 285 °C
• storage temp.: 2-30°C
• InChI: 1S/C19H14O5S.Na/c20-15-9-5-13(6-10-15)19(14-7-11-16(21)12-8-14)17-3-1-2-4-18(17)25(22,23)24-19;/h1-12,20-21H;/q;+1/p-1
• InChI key: HKHYOKBQJILTEI-UHFFFAOYSA-M

Description

Analysis Note

1st transition range: pH 1.2 - pH 3.0brownish orange - yellow
2nd transition range: pH 6.5 - pH 8.0brownish yellow - red violet
Appearance of solution: passes test
Loss on drying (110 °C): ≤ 8.0 %
Transition range (according to ACS): passes test

Safety Information

• Pictograms: GHS07
• Signal Word: Warning
• Hazard Statements: H315 - H335
• Precautionary Statements: P261 - P264 - P271 - P280 - P302 + P352 - P304 + P340 + P312
• Hazard Classifications: Skin Irrit. 2 - STOT SE 3
• Target Organs: Respiratory system
• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable