Dansyl chloride

Description

A Fluorescent dye primarily used to detect proteins. Dansyl chloride has yellow orange crystals. It is also used in fluorescent labeling and as a detection agent for column chromatography.

Chemical structure

Synonyms and Related Terms

5-dimethylamino-1-naphthalenesulfonyl chloride; 5-dimethylamononaphthyl-5-sulfonyl chloride

Risks

• Contact causes irritation and possible burns.
• Fisher Scientific: MSDS

Physical and Chemical Properties

• Soluble in acetone, acetonitrile, methylene chloride. Insoluble in water.
• Maximum absorption wavelength = 335 nm.
• Maximum emission wavelength = 500 nm.

Composition	C12H12ClNO2S
CAS	605-65-2
Melting Point	72-74 C
Molecular Weight	mol. wt.= 269.6025

Resources and Citations

• Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993

• The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 2877

• Aldrich Chemical Catalog Comment: p. 433