ScholarLens Back to search
1969•Journal of AOAC INTERNATIONALRequires access

TLC Determination of Uncombined 2-Naphthol-6-Sulfonic Acid (Sodium Salt) (Schaeffer Salt) in Color Additives

Lueangier Moten, CHRISTINE M. KOTTEMANN

Open publisher page 0 citations

Abstract

Abstract A thin layer chromatographic method is presented for determining uncombined sodium salt of 2-naphtliol-6-sulfonic acid (Schaeffer salt) in Ext. D&C Green No. 1. A direct fluorometric measurement may also be used to determine Schaeffer salt in Ext. D&C Green No. 1 and in FD&C Yellow No. 6. Uncombined Schaeffer salt in commercial samples of FD&C Yellow No. 6 varied from 0 to 0.5%; no samples of External D&C Green No. 1 were found to contain >0.1% of uncombined Schaeffer salt.

About this research paper

What this paper is about

Abstract A thin layer chromatographic method is presented for determining uncombined sodium salt of 2-naphtliol-6-sulfonic acid (Schaeffer salt) in Ext. D&C Green No. 1. A direct fluorometric measurement may also be used to determine Schaeffer salt in Ext. D&C Green No. 1 and in FD&C Yellow No. 6. Uncombined Schaeffer salt in commercial samples of FD&C Yellow No. 6 varied from 0 to 0.5%; no samples of External D&C Green No. 1 were found to contain >0.1% of uncombined Schaeffer salt.

Why it matters

A significance statement is not available in the OpenAlex record.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Abstract A thin layer chromatographic method is presented for determining uncombined sodium salt of 2-naphtliol-6-sulfonic acid (Schaeffer salt) in Ext. D&C Green No. 1. A direct fluorometric measurement may also be used to determine Schaeffer salt in Ext. D&C Green No. 1 and in FD&C Yellow No. 6. Uncombined Schaeffer salt in commercial samples of FD&C Yellow No. 6 varied from 0 to 0.5%; no samples of External D&C Green No. 1 were found to contain >0.1% of uncombined Schaeffer salt.

Key concepts: Salt (chemistry), Chemistry, Sodium salt, Sulfonic acid, Sodium, Nuclear chemistry, Chromatography, Inorganic chemistry

Related papers

Related paper 1Related paper 2Related paper 3
Back to paper searchBrowse research topicsOriginal source
TLC Determination of Uncombined 2-Naphthol-6-Sulfonic Acid (Sodium Salt) (Schaeffer Salt) in Color Additives — Research Paper | ScholarLens