50%氢氧化钾溶液应用广泛，工业上主要用作钾盐的生产原料；在在医药工业中，用于生产钾硼氢、安体舒通、沙肝醇、丙酸睾丸素等；在轻工业中用于生产钾肥皂、碱性蓄电池、化妆品（如冷霜、雪花膏和洗发膏）；在染料工业中，用于生产还原染料，如还原蓝RSN等；在电化学工业中，用于电镀、雕刻等。
50% potassium hydroxide solution is widely used and is mainly used as raw material for potassium salt production in industry; In the pharmaceutical industry, it is used to produce potassium borohydride, spironolactone, saganol, testosterone propionate, etc; In light industry, it is used to produce potassium soap, alkaline battery and cosmetics (such as cold cream, snow cream and shampoo); In the dye industry, it is used to produce vat dyes, such as vat blue RSN, etc; In the electrochemical industry, it is used for electroplating, engraving, etc.
在纺织工业中，用于印染、漂白和丝光，并大量用作制造人造纤维、聚酯纤维的主要原料；在日化工业用作制造洗污肥皂、洗头软皂、雪花膏、冷霜、洗发膏等的原料；制药工业用于制造黄体酮、香兰素等原料。染叽叽歪歪吧料工业用于制造三聚氰胺染料。电池工业用于制造碱性蓄电池。；此外，还用于冶金加热剂和皮革脱脂等方面。
In the textile industry, it is used for printing and dyeing, bleaching and mercerization, and is widely used as the main raw material for manufacturing man-made fiber and polyester fiber; In the daily chemical industry, it is used as raw material for manufacturing sewage soap, shampoo soap, snow cream, cold cream, shampoo, etc; The pharmaceutical industry is used to manufacture progesterone, vanillin and other raw materials. The dyeing material industry is used to make melamine dyes. The battery industry is used to manufacture alkaline batteries.; In addition, it is also used for metallurgical heating agent and leather degreasing.

急救措施
First aid measures
皮肤接触：立即用水冲洗至少15分钟有条件的用弱酸清洗伤口（如醋酸、硼酸）。若有灼伤，就医治疗。
Skin contact: immediately rinse with water for at least 15 minutes. If possible, clean the wound with weak acid (such as acetic acid and boric acid). In case of burns, seek medical treatment.
眼睛接触：立即提起眼睑，用流动清水或生理盐水冲洗至少15分钟。或用3%硼酸溶液冲洗。就医。
Eye contact: lift the eyelids immediately and rinse with flowing water or normal saline for at least 15 minutes. Or rinse with 3% boric acid solution. See a doctor.
吸入：迅速脱离现场至空气新鲜处。必要时进行人工呼吸。就医。
Inhalation: quickly leave the site to a place with fresh air. Artificial respiration if necessary. See a doctor.
食入：患者清醒时立即漱口，口服稀释的醋或柠檬汁，就医。
Ingestion: when the patient is awake, rinse his mouth immediately, take orally diluted vinegar or lemon juice, and seek medical attention.
灭火方法：雾状水、砂土、二氧化碳。
Fire extinguishing method: fog water, sand and carbon dioxide.
应急处理： 隔离泄漏污染区，限制出入。建议应急处理人员戴防尘面具（全面罩），穿防毒服。勿使泄漏物与还原剂、有机物、易燃物或金属粉末接触。不要直接接触泄漏物。小量泄漏：用洁净的铲子收集于干燥、洁净、有盖的容器中。大量泄漏：收集回收或运至废物处理场所处置。
Emergency treatment: isolate the leakage contaminated area and restrict access. It is recommended that emergency treatment personnel wear dust masks (full face masks) and gas suits. Do not let the leakage come into contact with reducing agents, organics, combustibles or metal powders. Do not touch the leakage directly. Small leakage: collect it in a dry, clean and covered container with a clean shovel. Massive leakage: collect, recycle or transport to the waste treatment site for disposal.