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Phenol Red

Inquiry
  Post Date: Aug 01,2014
  Expiry Date: Jan 28,2015
  Detailed Description: Cas No. :143-74-8 Quantity: 200 Kilograms
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1. CAS NO.: 143-74-8
2. Molecular Formula: C19H14O5S
3. Molecular Weight: 354.38
4. Storage: Keep in dry ventilated place with sealed.
5. Use: PH indicator.

ITEM
Appearance: Red crystalline powder

Melting Point : 300 °C

Flash Point: >300 °C

PH Change Range:
1.2 ( orange ) - 3.0 ( yellow )
6.5 (brown yellow ) - 8.0 ( Fuchsia )

Mass Absorption Wavelength L/ (cm.g) λ1 (PH 1.2): 503 ~506 nm
λ2 (PH 3.0): 430 ~ 435 nm
λ3 (PH 6.5): 430 ~ 435 nm
λ4 (PH 8.0): 557 ~ 560 nm
Mass Absorption Coefficient L/ (cm.g):
α1(λ1,PH 1.2)110-123
α2(λ2,PH 3.0)60-68
α3(λ3,PH 6.5)62-72
α4(λ4,PH 8.0)120-135

Loss on Drying: ≤ 1.0 %

Residue on Ignition ≤ 0.2 %

  CAS Registry Number:

143-74-8
  Synonyms: ;Phenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis-, S,S-dioxide;Phenol Red Free Acid Cell Culture Tested;Phenol Red, indicator;Phenolsulfonephthalein;Phenolsulfonphthalein;4,4'-(1,1-dioxido-3H-2,1-benzoxathiole-3,3-diyl)diphenol;Phenol Red Indicator;
  Molecular Formula: C19H14O5S
  Molecular Weight: 354.3765
  Molecular Structure: 143-74-8 Phenol Red
  Hazard Symbols:  Xi:Irritant;
  Risk Codes: R36/37/38:;
  Safety Description: S26:;
S37/39:;

  Company: Tianjin Evision Technology     [ China ]        
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