乙基磷酸

【用途一】
农药上用于合成杀菌剂三乙膦酸铝(乙膦铝)。

[ 沸点 ]:
260.5ºC at 760 mmHg

[ 熔点 ]:
61-63 °C(lit.)

[ 分子式 ]:
C₂H₇O₃P

[ 分子量 ]:
110.04900

[ 闪点 ]:
111.3ºC

[ 精确质量 ]:
110.01300

[ PSA ]:
67.34000

[ LogP ]:
0.18400

[ 外观性状 ]:
白色结晶粉末

[ 稳定性 ]:
Stable. Incompatible with strong oxidizing agents, strong bases.

详细MSDS(安全技术说明书)

[ 符号 ]:

GHS05

[ 信号词 ]:
Danger

[ 危害声明 ]:
H314

[ 警示性声明 ]:
P280-P305 + P351 + P338-P310

[ 个人防护装备 ]:
Eyeshields;Faceshields;full-face particle respirator type N100 (US);Gloves;respirator cartridge type N100 (US);type P1 (EN143) respirator filter;type P3 (EN 143) respirator cartridges

[ 危害码 (欧洲) ]:
C

[ 风险声明 (欧洲) ]:
R34

[ 安全声明 (欧洲) ]:
S26-S27-S28-S36/37/39-S45

[ 危险品运输编码 ]:
UN 3261 8/PG 2

[ WGK德国 ]:
3

[ 包装等级 ]:
III

[ 危险类别 ]:
8

[ 海关编码 ]:
2931900090

详细合成路线

【方法一】
其制备方法是由三氯化磷与乙醇在水存在下反应，制得亚磷酸二乙酯与亚磷酸单乙酯的混合物。
而后加氨水或氢氧化钠使两者都转化为盐。
该盐与稍过量的硫酸铝反应，即得到杀菌剂三乙膦酸铝。
具体工艺过程：将酒精与水混合并冷却到10℃左右，在减压下滴加三氯化磷，保持温度在30℃左右；滴加完毕后再搅拌15min，然后提高真空度至97～99kPa，用沸水加热到80～85℃，而后冷却到5℃，用10％左右氨水中和，再在30℃以下加过量5％的氨水(浓度不变)；加完后停止搅拌，在40～45℃下静置2h，在87～93kPa脱水，液温至80℃时停止，得到产品亚磷酸单乙酯。

[ 海关编码 ]: 2931900090

[ 中文概述 ]:
2931900090. 其他有机-无机化合物. 增值税率:17.0%. 退税率:13.0%. 监管条件:AB(入境货物通关单,出境货物通关单). 最惠国关税:6.5%. 普通关税:30.0%

[ Summary ]:
2931900090. other organo-inorganic compounds. VAT:17.0%. Tax rebate rate:13.0%. Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward). MFN tariff:6.5%. General tariff:30.0%

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