117-59-9 Usage
Description
1-Naphthol-5-sulfonic acid, a derivative of naphthalene with the molecular formula C10H8O4S, is a white to off-white crystalline powder. It is a chemical compound that serves as a versatile reagent in the synthesis of various organic compounds, particularly dyes and pigments.
Uses
Used in Dye and Pigment Synthesis:
1-Naphthol-5-sulfonic acid is used as a reagent for the synthesis of various dyes and pigments, contributing to the production of a wide range of colorants used in different industries.
Used as a pH Indicator:
1-Naphthol-5-sulfonic acid is utilized as a pH indicator, playing a crucial role in monitoring and controlling the acidity or alkalinity of solutions in various applications.
Used in Analytical Chemistry:
In analytical chemistry, 1-Naphthol-5-sulfonic acid is employed to determine the presence of certain metals, aiding in the identification and quantification of metal ions in samples.
Used in Pharmaceutical Production:
1-Naphthol-5-sulfonic acid is used in the production of pharmaceuticals, serving as an essential component in the synthesis of various drugs and medications.
Used as an Intermediate in Agrochemical Manufacture:
This chemical compound is also employed as an intermediate in the manufacture of agrochemicals, contributing to the development of products used in agriculture for pest control and crop protection.
Safety Precautions:
It is important to handle 1-Naphthol-5-sulfonic acid with care, as it can cause skin and eye irritation upon contact. Proper safety measures should be taken to minimize the risk of exposure.
Check Digit Verification of cas no
The CAS Registry Mumber 117-59-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,1 and 7 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 117-59:
(5*1)+(4*1)+(3*7)+(2*5)+(1*9)=49
49 % 10 = 9
So 117-59-9 is a valid CAS Registry Number.
InChI:InChI=1/C10H8O4S/c11-9-5-1-4-8-7(9)3-2-6-10(8)15(12,13)14/h1-6,11H,(H,12,13,14)
117-59-9Relevant articles and documents
Process for aryl-quinone and aryl-naphthoquinone diazide sulfonic acids
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, (2008/06/13)
A process for the preparation of aryl-diazide-sulfonic acids by a series of sequential in-situ process steps. The process comprises the nitrosation of a hydroxyarylsulfonic acid; conversion of the nitroso-derivative to a sulfamate which is then diazotized to the diazide. Temperature and pH are maintained in predetermined ranges to maintain the reaction products in solution without the formation side-products or the need to isolate intermediates. The process of the invention is particularly useful in the preparation of light-sensitive materials such as naphthoquinonediazide sulfonic acids which are used in the preparation of photoresist compositions. The invention provides a high purity product at a high material efficiency, high equipment utilization, low effluent discharge, and reduced cost.