Provided are an azo dye composition including an azo dye compound represented by Formula (I) and a urea compound represented by Formula (II), and a method for producing an azo dye composition. R.sup.11, R.sup.12, R.sup.13 and R.sup.14 each independently represent a hydrogen atom, a halogen atom, or an aliphatic group; R.sup.15 represents an aliphatic group; R.sup.21 and R.sup.22 each independently represent a hydrogen atom, an aliphatic group, or an aromatic group; and n represents an integer from 0 to 2. ##STR00001##

Provided are an azo dye composition including an azo dye compound represented by Formula (I) and a urea compound represented by Formula (II), and a method for producing an azo dye composition. R.sup.11, R.sup.12, R.sup.13 and R.sup.14 each independently represent a hydrogen atom, a halogen atom, or an aliphatic group; R.sup.15 represents an aliphatic group; R.sup.21 and R.sup.22 each independently represent a hydrogen atom, an aliphatic group, or an aromatic group; and n represents an integer from 0 to 2.

##STR00001##

The present disclosure provides a compound represented by the following formula (1).

##STR00001##

The present invention refers to dyes of the formula (I) and mixtures thereof ##STR00001##
a process for their production and to their use.

This invention relates to heterocyclic red azo colorants for seed treatment applications. The red azo colorants contain a heterocycle that includes one nitrogen atom and one sulfur atom and are free from electron-withdrawing groups on the heterocycle. Seeds for use in horticultural/agriculture applications that are coated with the heterocyclic azo colorants provide anti-counterfeiting properties to the coated seeds. A color change phenomenon is observed when the coated seeds are exposed to an acidic material, such as vinegar, and provides evidence of the authenticity of the coated seeds. The invention also relates to agricultural formulations containing the heterocyclic red azo colorants that can be used as an anti-counterfeit agents.

Dye mixtures based on dye(s) of formula (1) ##STR00001##
and dye(s) of formula (2) ##STR00002##
formula (3) ##STR00003##
formula (4) ##STR00004##
formula (5a) ##STR00005##
and/or formula (5b) ##STR00006##

A mono-azo dichroic dye compound represented by the following Chemical Formula 1, a composition for polarizing plate, a polarizing plate, and an optical device. ##STR00001## In Chemical Formula 1, Z represents any one selected from the group consisting of CN, COOR.sub.11, indanone and 1,3-dioxoindane, wherein R.sub.11 is any one selected from the group consisting of alkyl groups, aryl groups, and substituted or non-substituted heteroaryl groups. The mono-azo dichroic dye compound shows excellent dichroic properties, and has excellent heat resistance and photo-resistance, and thus may be used advantageously for a dye-based polarizing plate.