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, there gastrointestinal symptoms; the person 20 ~ 50 g, glacial acetic acid, 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, glacial acetic acid solvent 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, or even cause bronchitis. Inhalation (200 ~ 490) mg / m3 × (7 ~ 12), there are 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, 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 basic components of acetic acid (acetic acid) molecule containing two carbon atoms of the unsaturated carboxylic acid, an important derivative oxygenated hydrocarbons. Simple structure formula C2H4O ?, CH? COOH, HAC is shorthand style. Carboxyl functional group of the formula, CAS No. 64-19-7. Because the main component of vinegar, also known as acetic acid. For example, in the fruit or vegetable in the form of its main compound of esters; in animal tissue, feces and blood in the free acid form. Ordinary vinegar contains 3% to 5% acetic acid. Acetic acid is a colorless liquid, sell acetic acid solvent with strong pungent odor. 60.05 molecular weight, melting point 16 .6 ℃, boiling point 117 .9 ℃, the relative density of 1.0492 (20/4 ℃) density than water, the refractive index of 1.3716. Pure acetic acid at below 16.6 ℃ can ice-like solid, acetic acid prices, so often referred to as glacial acetic acid. Soluble in water, ethanol, ether and carbon tetrachloride. When water is added to acetic acid, the total volume of the mixture is reduced, increasing the density until the molecular ratio of 1: 1, the equivalent of a monobasic acid form of the original acid CH3C (OH) ?, further dilution, the volume does not change. Glacial acetic acid, acetic acid manufacturers _ _ Zhengzhou Longda Chemical (certified merchants) are provided by 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 !