Benzenesulfonic acid, 2-methyl-5-nitro-, alk. cond. products, reaction products with formaldehyde

Benzenesulfonic acid, 2-methyl-5-nitro-, alk. cond. products, reaction products with formaldehyde 化学特性,用途語,生産方法

• 製造方法

  C.I. Direct Yellow 11 (C.I. 40000) solution with?Formaldehyde?condensation; Or (E)-2-(2-sulfo-4-nitrostyryl)-5-nitrobenzenesulfonic acid?in the presence of sodium hydroxide solution and Formaldehyde heating.

• Properties and Applications

  yellow to red light yellow. Soluble in water for lemon yellow, not soluble in ethanol and other organic solvents. The strong sulfuric acid for wine, diluted for yellow. The dye solution to join 10% color is more green sulfuric acid; Join rare sodium hydroxide solution reddish change.
  

  Standard	Acid Resistance	Alkali Resistance	Light Fastness	Soaping		Water
  				Fading	Stain	Fading	Stain
  ISO	4-5	4-5	2-3	3		3
  AATCC	1	1	1-2	2-3		2-3

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