化学灼伤系腐蚀性物质作用于接触部位引起组织破坏所致。皮肤、眼和消化道最易发生化学灼伤。常见的化学灼伤多是因揭开容器倾倒化学物时发生泼溅,或由于剧烈的化学反应及管道损漏引起喷溅等造成的。工业生产中易引起灼伤的化学物质有硫酸、盐酸、硝酸、氢氟酸、氢氧化钾和磷化钾。化学灼伤的严重程度取决于化学物质的种类、浓度、剂量、作用方式、接触时间等。化学灼伤程度可分四度: Ⅰ°灼伤——患处呈现红斑、水肿、有剧烈疼痛,但 Chemical burns corrosive substances in the contact area caused by tissue damage. Skin, eyes and digestive tract most likely chemical burns. Common chemical burns are mostly caused by splashing when the container is dumped with chemicals or by splashing caused by violent chemical reactions and plumbing. Industrial production can cause burns chemical substances are sulfuric acid, hydrochloric acid, nitric acid, hydrofluoric acid, potassium hydroxide and potassium phosphide. The severity of chemical burns depends on the type of chemical substance, its concentration, its dosage, its mode of action and its exposure time. Degree of chemical burns can be divided into four degrees: Ⅰ ° burns - the affected area showed erythema, edema, severe pain, but