1395-18-2 Usage
Description
Azolitmin, also known as a purplish-red colorant, is a compound that serves as an alternative to litmus in various applications. It is characterized by its ability to change color based on the pH level of its environment, displaying a red color at a pH of 4.5 and a blue color at a pH of 8.3. This unique property allows it to be used as an indicator in different industries.
Uses
Used in Chemical Industry:
Azolitmin is used as an indicator for [application type] pH testing [application reason] to determine the acidity or alkalinity of a solution. Its color change at specific pH levels makes it a valuable tool in chemical analysis and quality control processes.
Used in Pharmaceutical Industry:
Azolitmin is used as an indicator for [application type] preparing litmus media [application reason] for bacteriological purposes. The compound's ability to change color based on pH levels helps in creating a suitable environment for the growth and study of microorganisms in the pharmaceutical industry.
Used in Educational Settings:
Azolitmin is used as an educational tool for [application type] teaching pH concepts [application reason] in schools and universities. Its visual color change makes it an effective and engaging way to demonstrate the principles of acidity and alkalinity to students.
Purification Methods
It crystallises from water as dark violet scales, or as a red powder on precipitation from H2O by addtition of EtOH. It is an indicator which is red at pH 4.5 and blue at pH 8.3. [cf Kolthopff & Rosenblum Acid-Base Indicators, Macmillan, NY pp160-162, 365-366 1937.] p,p'-Azoxyanisole (4,4'-dimethoxyazoxybenzene) [1562-94 -3] M 258.3, transition temperatures: 118.1-118.8o, 135.6-136.0o, pK25 -5.23 (20% aqueous EtOH + 80% aqueous H2S O4). Crystallise the dye from absolute or 95% EtOH, or acetone, and dry it by heating under vacuum or sublime it in a vacuum onto a cold finger. [Beilstein 16 II 326.]
Check Digit Verification of cas no
The CAS Registry Mumber 1395-18-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,3,9 and 5 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1395-18:
(6*1)+(5*3)+(4*9)+(3*5)+(2*1)+(1*8)=82
82 % 10 = 2
So 1395-18-2 is a valid CAS Registry Number.
