Cresol Purple

Post Date:
Aug 01,2014
Expiry Date:
Aug 01,2015
Detailed Description:
Cas No. :2303-01-7 Quantity: 200Kilograms
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1. CAS NO.: 2303-01-7
2. Molecular Formula: C21H18O5S
3. Molecular Weight: 382.44
4. Storage: Keep in dry ventilated place with sealed.
5. Use: PH indicator.

ITEM
Appearance Green brown or brown powder

Flash Point 205.3 °C

PH Change Range
1.2 ( pink ) - 2.8 ( yellow )
7.4 (brown yellow) - 9.0 ( purple )

Mass Absorption Wavelength L/ (cm.g):
λ1 (PH 1.2): 526 ~529 nm
λ2 (PH 2.8): 431 ~ 437 nm
λ3 (PH 7.4): 431 ~ 437 nm
λ4 (PH 9.0): 576 ~ 580 nm

Mass Absorption Coefficient L/ (cm.g):
α1(λ1,PH 1.2)80-94
α2(λ2,PH 2.8)40-46
α3(λ3,PH 7.4)39-45
α4(λ4,PH 9.0)75-86

Loss on Drying ≤ 1.0%
CAS Registry Number:
2303-01-7
Synonyms:
;4,4'-(1,1-Dioxido-3H-2,1-benzoxathiole-3,3-diyl)bis(3-methylphenol);phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[3-methyl-;2-[(Z)-(4-hydroxy-2-methylphenyl)(2-methyl-4-oxocyclohexa-2,5-dien-1-ylidene)methyl]benzenesulfonic acid;3,3-bis(4-hydroxy-2-methylphenyl)-2-benzofuran-1(3H)-one;
Molecular Formula:
C₂₂H₁₈O₄
Molecular Weight:
346.3759
Molecular Structure:
Safety Description:
S24/25:;

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