CAS number：5567-15-7
molecular formula：C36H32Cl4N6O8
molecular weight：818.49
EINECS number：226-939-8

English synonyms

2,2'-[(3,3'-Dichloro-1,1'-biphenyl-4,4'-diyl)bis(azo)]bis[N-(4-chloro-2,5-dimethoxyphenyl)-3-oxobutanamide];PY-83;2,2'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[n-(4-chloro-2,5-dimethoxyphenyl)-3-oxobutyramide];C.I. 21108;PIGMENT YELLOW 83;permanent yellow hr;C.I.Pigment Yellow83;Solid yellow 2 gs - 2

Related categories

Pigments; Dyes and Pigments; Organic Pigments; Standards; Chemical Materials; Organics

Introduction

Pigment Yellow 83 (PigmentYellow83), red light yellow powder, with a specific surface area of 69m2/g, has excellent light resistance, heat resistance, solvent resistance and migration resistance, giving a stronger red light yellow than Pigment Yellow 13 (compared to Pigment Yellow 13). 10 similar, the strength is 1 times higher), suitable for various printing inks and automotive coatings (OEM), latex paint; widely used in plastic coloring.

Chemical properties

Red light yellow powder. The heat resistance is stable at 200℃. Other properties, such as light fastness, solvent resistance, acid resistance, and alkali resistance are excellent.

Use

●  Mainly used for coloring inks, plastic products and coatings

Production method

●  In the diazotization reactor, add 200 kg of water, 16.3 kg of 3,3'-dichlorobenzidine hydrochloride, 16 kg of 35% hydrochloric acid, cool down to 0 to 5 °C, add 28.4 kg of 25% sodium nitrite solution, Reaction for 30min, decolorizing with activated carbon, destroying excess sodium nitrite, filtering, and diazonium salt for coupling.
29.91 g of 2,5-dimethoxy-4-chloroacetoacetanilide was mixed with 500 kg of water and 10 kg of 40% sodium hydroxide, 50 kg of sodium acetate was added, and 85 kg of formic acid was added dropwise. Coupling with diazonium salt at 5～10°C, continue stirring for 30～60min, heat up to 90～95°C and maintain for 30～60min. Filter and dry the product.

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