Physicochemical properties of thujic acid and sulfonated thujic acid
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Help: Does anyone know the physical and chemical properties of thiosulfuric acid and sulfonated thiosulfuric acid? Please provide as much information as possible; thanks!
Thujic acid: Chemical name – 2-Amino-1-naphthalenesulfonic acid; Molecular formula – C10H9NO3S; Molecular weight – 223.25. Properties: Thujic acid appears as pink needle-shaped crystals and is slightly soluble in water, while its sodium and ammonia salts are highly soluble in water. Quality criteria: Premium grade, First-grade, Qualified. Appearance: White to light pink powder. Total amino group value (on a dry basis): % ≥ 98.5 98.5 97; 2-naphthylamine content: % ≤ 0.01 0.10 0.25; Moisture content: % ≤ 1.0 1.0 2.0
Who has the standard for tujic acid? Thanks for sharing
Specifications and quality standards for p-toluenesulfonic acid (HG2548-1993) Quality indicators: Premium grade, First-grade, Conforming grade Appearance: White to light pink powder Total amine value (on a dry basis): % ≥ 98.5, 98.5, 97 Content of 2-naphthylamine: % ≤ 0.01, 0.10, 0.25 Moisture content: % ≤ 1.0, 1.0, 2.0