Cresol Red

Post Date:
Aug 01,2014
Expiry Date:
Jan 28,2015
Detailed Description:
Cas No. :1733-12-6 Quantity: 200Kilograms
Payment Method: TT, L/C, D/A, D/P, Western Union, Paypal
1. CAS NO.: 1733-12-6
2. Molecular Formula: C21H18O5S
3. Molecular Weight: 382.43
4. Storage: Keep in dry ventilated place with sealed.
5. Use: PH indicator.

ITEM
Appearance: brownish red crystal

Melting Point 290 °C

Flash Point: 293.6 °C

PH Change Range: 6.5 (yellow) - 8.5( purple)

Mass Absorption Wavelength L/ (cm.g):
λ1 (PH 6.5): 432~436 nm
λ2 (PH 8.5): 571~574 nm

Mass Absorption Coefficient L/ (cm.g):
α1 ( λ1,PH6.5 ) 49 - 67 ,
α2 ( λ2,PH8.5 ) 100 - 132

Loss on Drying: ≤3.0 %

Residue on Ignition: ≤ 0.2%
CAS Registry Number:
1733-12-6
Synonyms:
;Cresol red (0.1% in ca. 20% ethanol);o-Cresolsulphonephthalein;o-Cresol Red;o-Cresolsulfonphthalein;4,4'-(1,1-dioxido-3H-2,1-benzoxathiole-3,3-diyl)bis(2-methylphenol);2-[(Z)-(4-hydroxy-3-methylphenyl)(3-methyl-4-oxocyclohexa-2,5-dien-1-ylidene)methyl]benzenesulfonic acid;
Molecular Formula:
C₂₁H₁₈O₅S
Molecular Weight:
382.4296
Molecular Structure:
Safety Description:
S24/25:;

Offter to Sell