Pigment Red 122 synthesis
- Product Name:Pigment Red 122
- CAS Number:980-26-7
- Molecular formula:C22H16N2O2
- Molecular Weight:340.37
10291-28-8
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980-26-7
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Yield:980-26-7 99.59%
Reaction Conditions:
with polyphosphoric acid PPA at 125; for 6 h;Dieckmann Condensation;
Steps:
2.3 3, closed-loop reaction:
In a 1 L three-necked flask equipped with an electrically heated magnetic stirrer, a thermocouple and condenser (distillation unit) were installed. , In three84.5 g PPA (0.25 mol) of polyphosphoric acid was added to the flask, and after 3 hours at 100 ° C, 18.8 g of 2,5-dimethylAniline terephthalic acid (0.05mol), add the material, the reaction at 125 3h, stop the reaction. The crude product 2,9-dimethylquinacridone 16.93g, yield 99.59%.
References:
Zhejiang Jiangshan Chemical Co., Ltd.;Xu Xiaohang;Lv Rong;Wang Zongbo;Han Mengmeng;Dou Herui CN106831763, 2017, A Location in patent:Paragraph 0033
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