formaldehyde solution
- formaldehyde solution的基本解释
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甲醛溶液, 福尔马林
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Formaldehyde Solution, more than 30%; Formalin
22甲醛溶液，超过30%；福尔马林
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Condensed tannin-larch valonia, a kind of nature organic polymolecule and formaldehyde solution and dimethylamine water solution were used as raw materials to complete the Mannich reaction for tannin modification and the production was obtained.
本文以天然有机高分子化合物——落叶松栲胶为原料，用甲醛、二甲胺通过曼尼希反应对其中的缩合类单宁进行阳离子化改性，制得阳离子单宁。
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In the presence of ethanol- HCl solution, arylamine-HCl and w=37% aqueous formaldehyde solution or the condensation product of arylamine and formaldehyde are directly reacted with ethyl 3-oxo-2-phenylmethylenebutyrate to form l-aryl-2-phenyl-3-carbethoxy-4-piperidone.
2－苯亚甲基－3－丁酮酸乙酯与芳香胺和w＝37％甲醛水溶液或芳胺和甲醛的缩合物在氯化氢－无水乙醇存在下可直接发生的Mannich反应，得到1－对位取代芳基－2－苯基－3－羰乙氧基－哌啶－4－酮。
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ETHYL CYANOACETATE：氰基甲酸乙酯
H-酸 H. ACID | 氰基甲酸乙酯 ETHYL CYANOACETATE | 甲醛 Formaldehyde 37% Solution in water