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1.特性及用途草酸于室温下为白色固体。有两种形式:无水草酸与二水草酸。二水草酸为无色无味的晶体,不溶于苯、氯仿和石油醚,但溶于水,其溶解度分别为:1g/7ml水,2ml沸水,2.5ml乙醇,100ml乙醚和5.5ml甘油。无水草酸,15℃时100g水可溶解6.71g,20℃时为8.34g,25℃时为9.81g。草酸用于金属除锈、清洗各种加热器、制革和纺织品漂白以及稀土元素的生产,在医药与化学等工业中亦有广泛的应用。职业接触主要为草酸的粉尘与蒸气,生产条件下亦可直接接触到固体草酸及其溶液。2.体内代谢
1. Characteristics and uses Oxalic acid is a white solid at room temperature. There are two forms: anhydrous oxalic acid and dihydrate oxalic acid. Oxalic acid is a colorless and odorless crystal, insoluble in benzene, chloroform and petroleum ether, but soluble in water, its solubility were: 1g / 7ml water, 2ml boiling water, 2.5ml ethanol, 100ml ether and 5.5ml glycerol. Anhydrous oxalic acid, 100g water soluble at 15 ℃ 6.71g, 8.34g at 20 ℃, 9.81g at 25 ℃. Oxalic acid for metal rust, cleaning a variety of heaters, leather and textile bleaching and production of rare earth elements in the pharmaceutical and chemical industries are also widely used. Occupational exposure to mainly oxalic acid dust and steam, the production conditions can also be directly exposed to solid oxalic acid and its solution. 2. In vivo metabolism