氢氧化钾外观为白色片状或粉状，具有强烈腐蚀性和强碱性。氢氧化钾暴露在空气中时，易被空气中的水分而潮解，并吸收二氧化碳而成碳酸钾。易溶于水、乙醇或酸，并释放大量的热量。氢氧化钾在不同温度下，溶解度也有所不同。

The appearance of potassium hydroxide is white flake or powder, with strong corrosivity and alkalinity. When potassium hydroxide is exposed to the air, it is easy to be deliquested by the moisture in the air and absorb carbon dioxide to form potassium carbonate. It is easily soluble in water, ethanol or acid and releases a lot of heat. The solubility of potassium hydroxide is different at different temperatures.

在0℃时，能溶解97克氢氧化钾；在10℃时，能溶解103克氢氧化钾；在20℃时，能溶解112克氢氧化钾；在30℃时，能溶解126克氢氧化钾。由此可见，温度高时，氢氧化钾的溶解度也提高了。

At 0 ℃, 97g potassium hydroxide can be dissolved; At 10 ℃, 103g potassium hydroxide can be dissolved; 112 g potassium hydroxide can be dissolved at 20 ℃; 126g potassium hydroxide can be dissolved at 30 ℃. It can be seen that the solubility of potassium hydroxide increases at high temperature.

氢氧化钾对组织有烧灼作用，可溶解蛋白质，形成碱性变性蛋白质。溶液或粉尘溅到皮肤上，尤其溅到黏膜，可产生软痂。氢氧化钾的溶解度溶越高，温度越高，作用就越强。如不慎溅入眼内，不仅可损伤角膜，而且能使眼部深组织损伤。

Potassium hydroxide can cauterize tissues, dissolve proteins, and form basic denatured proteins. If the solution or dust splashes on the skin, especially on the mucous membrane, it can produce soft scabs. The higher the solubility of potassium hydroxide, the higher the temperature, the stronger the effect. If accidentally splashed into the eyes, it can not only damage the cornea, but also damage the deep tissues of the eyes.

氢氧化钾高容许浓度为0.5mg/m。工作时应防止触及皮肤和眼睛，如不慎触及时，可用流水洗涤受损部位，然后湿敷5%的醋酸、酒石酸、盐酸或柠檬酸溶液；如溅人眼内，应用流水或生理盐水仔细缓慢洗涤10～30min，然后点入2%的奴佛卡因或0.5%的地卡因溶液。

The high allowable concentration of potassium hydroxide is 0.5mg/m. Avoid touching the skin and eyes during work. If it is accidentally touched, wash the damaged part with running water, and then wet apply 5% acetic acid, tartaric acid, hydrochloric acid or citric acid solution; If it splashes into the eyes, wash it carefully and slowly with running water or normal saline for 10~30min, and then add 2% novocaine or 0.5% dicaine solution.

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