Acute toxicity: LD50: 3.3 g / kg (rat oral); 1060 mg / kg (rabbit percutaneous). LC50: 5620 ppm, 1 h (mouse inhalation); 12.3 g / m3,1 h (rat inhalation). The person I 1.47 mg / kg, the lowest toxic dose, glacial acetic acid agents, gastrointestinal symptoms; the person 20 ~ 50 g, lethal dose. Severe burns to 80 percent concentration of acetic acid can cause the skin of guinea pigs, 50% to 80% of the produce moderate to severe burns, it is very slightly less than 50%, 5% to 16% concentration never burns. People can not be 2 ~ 3 g / m3 concentration tolerated than 3 min. Human oral lethal dose is 20 ~ 50 g. Subacute and chronic toxicity: This concentration is about 100 mg / m3 role in bringing workers with chronic nose, nasopharynx, eyelid and throat inflammation occurs, glacial acetic acid, and even cause bronchitis. Inhalation (200 ~ 490) mg / m3 × (7 ~ 12) years, the role of glacial acetic acid, eyelid edema, conjunctival hyperemia, chronic pharyngitis, bronchitis and other symptoms. Mutagenicity: microbial mutagenicity: Escherichia coli 300 ppm (3 h). Sister chromatid exchange: human lymphocytes 5 mmol / L. Reproductive toxicity: rat poisoning by mouth lowest dose (TDL0): 700 mg / kg (18 d, postpartum), neonatal rat behavior affected. In rat testis poisoning the lowest dose (TDL0): 400 mg / kg (1 d, male), the impact on male fertility index. Health Hazards: Pathways to inhaled, ingested, percutaneous absorption. After inhalation of the nose, throat and respiratory tract irritation. A strong eye irritation. Skin contact, where the sale of glacial acetic acid, light erythema, causing severe chemical burns. Wrongly concentrated acetic acid, mouth and digestive tract can produce erosion, severe cases can cause shock and death. Chronic effects: eyelid edema, conjunctival hyperemia, chronic pharyngitis and bronchitis. Long-term repeated exposure can cause skin drying, degreasing and dermatitis. Environmental hazards: hazard to the environment, can cause pollution of water bodies. The melting point of glacial acetic acid at room temperature is a colorless liquid strong pungent sour. Acetic acid has a melting point 16.5 ° C (289.6 K). Boiling point 118.1 ° C (391.2 K). Pure acetic acid at temperatures below the melting point will freeze into ice crystals, it is acetic anhydride, also known as glacial acetic acid. Glacial acetic acid, acetic acid agents _ _ Zhengzhou Longda Chemical (Views) provided by the Zhengzhou Longda Chemical Products Limited. Road Zhiyuan, temper forward. Zhengzhou Longda Chemical Products Co., Ltd. (www.longdahuagong.com/) aims to become and you win symbiosis, strategic partners to move forward, more determined to become the most influential of inorganic acid companies, and you leap together to success !