1. ruaj khov nyob rau hauv ib txwm kub thiab siab. Cov ntaub ntawv tsis sib xws: acids, alkalis, txo cov neeg ua haujlwm, oxidizing cov neeg ua haujlwm. Nws yog ib qeb uas muaj toxicity tsawg. Tsis txhob ua pa pa thiab tiv nrog daim tawv nqaij.
Cov khoom siv tshuaj: Nws yog ntshav thaum nws ntsib ferric chloride. Thaum hydrolyzed nrog dilute acid los yog dilute alkali, acetone, ethanol thiab carbon dioxide yog generated. Nyob rau hauv qhov kev txiav txim ntawm lub hauv paus muaj zog, ob lub molecules ntawm acetic acid thiab ethanol raug tsim. Thaum txo cov catalytic, β-hydroxybutyric acid yog tsim. Nyob rau hauv cov tshiab distilled ethyl acetoacetate, daim ntawv enol account rau 7% thiab cov ketone daim ntawv account rau 93%. Thaum cov tshuaj ethanol ntawm ethyl acetoacetate tau txias rau -78 ° C, cov ketone compound yog precipitated nyob rau hauv lub xeev crystalline. Yog hais tias cov sodium derivative ntawm ethyl acetoacetate raug tshem tawm hauv dimethyl ether thiab me ntsis neutralized tus nqi ntawm cov roj hydrogen chloride qhuav dhau ntawm -78 ° C, cov roj enol tuaj yeem tau txais.
2. Cov khoom no tsis muaj tshuaj lom, nas qhov ncauj LD503.98g/kg. Tab sis nrog kev khaus me ntsis thiab tshuaj loog, cov khoom siv ntau lawm yuav tsum raug kaw thiab ua kom cua zoo. Cov neeg ua haujlwm tau nruab nrog cov khoom siv tiv thaiv.
