125-31-5 Usage
Chemical Properties
P-XYLENOL BLUE is Brown powder
Uses
Different sources of media describe the Uses of 125-31-5 differently. You can refer to the following data:
1. Indicator, used in 0.02% solution: pH 1.2 red, 2.8 yellow, 9.6 blue.
2. Xylenol Blue is used in methods and devices that change color to indicate the presence of opioids and other narcotics.
Check Digit Verification of cas no
The CAS Registry Mumber 125-31-5 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,2 and 5 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 125-31:
(5*1)+(4*2)+(3*5)+(2*3)+(1*1)=35
35 % 10 = 5
So 125-31-5 is a valid CAS Registry Number.
InChI:InChI=1/C23H22O5S/c1-13-11-20(24)15(3)9-18(13)23(19-10-16(4)21(25)12-14(19)2)17-7-5-6-8-22(17)29(26,27)28/h5-12,24H,1-4H3,(H,26,27,28)/b23-19+
125-31-5Relevant articles and documents
Solvent-free one-pot synthesis of sulfonephthaleins from saccharin and phenols
Tillu,Dumbre,Borate,Wakharkar,Choudhary
experimental part, p. 1101 - 1107 (2012/05/05)
Sulfonephthaleins can be synthesized in a single pot from saccharin and phenol via the in situ formation of 2-sulfobenzoic anhydride, followed by its reaction with phenol using H2SO4 as the condensing agent, in the absence of any solvent. This solvent-free synthesis is more economical and environmentally benign. Copyright Taylor & Francis Group, LLC.
