2-Naphthalenecarboxylic acid,4-[(5-chloro-4-methyl-2-sulfophenyl)azo]-3-hydroxy-, strontium salt (1:1)(CAS: 15782-05-5)

2-Naphthalenecarboxylic acid,4-[(5-chloro-4-methyl-2-sulfophenyl)azo]-3-hydroxy-, strontium salt (1:1) has a crystalline form with a molecular weight of approximately 679.93 g/mol. It is slightly soluble in water and more soluble in organic solvents. This compound is reactive towards nucleophiles and bases. It has a pKa of about 3.5 and exhibits strong color due to its azo group.

This compound is typically synthesized by reacting 4-[(5-chloro-4-methyl-2-sulfophenyl)azo]-3-hydroxy-2-naphthalenecarboxylic acid with strontium chloride in a suitable solvent under mild conditions. The reaction is performed in a fume hood to minimize exposure to toxic gases. The yield is around 80%, and the product is purified by recrystallization.

2-Naphthalenecarboxylic acid,4-[(5-chloro-4-methyl-2-sulfophenyl)azo]-3-hydroxy-, strontium salt (1:1) is used in the pharmaceutical industry for the synthesis of dyes and pigments. It is also utilized in the production of sensors and semiconductors for its color-stabilizing properties and reactivity.

When handling 2-Naphthalenecarboxylic acid,4-[(5-chloro-4-methyl-2-sulfophenyl)azo]-3-hydroxy-, strontium salt (1:1), appropriate personal protective equipment (PPE) should be worn, including gloves, goggles, and a lab coat. The compound should be stored in a cool, dry place away from direct sunlight. In case of spill, it should be handled according to the safety data sheet (SDS) guidelines, typically involving the use of absorbent materials and proper disposal. The product is not flammable but may release toxic gases if heated excessively.