1. Acute toxicity Toxicological data [10] LC50: 130mg / m3 (rat inhalation, 4h); 67ppm (mice inhaled nitric manufacturers, 4h) 2 stimulatory molecule structure data 1, mole refractive index: 9.602, molar volume (m3 / mol): 38.83, parachor (90.2K): 107.44, surface tension (dyne / cm): 58.65, polarization ratio (10-24cm3): 3.80 Ecotoxicity Ecological data 1. 2. The biodegradable 3 Non-biodegradable 4. Other adverse effects [11] The substance is hazardous to the environment, with special attention to water pollution and soil. 1. Nature and stability of the chemical properties: nitric acid is a strong acid when exposed to light and air portion decomposed. Decomposition of nitric oxide and oxygen when heated. Stable dilute nitric acid, 70% to 90% nitric acid at 0 ℃ nitrate, shadows are not decomposed. Concentrated nitric acid oxidation resistance, standard oxidation potential. 2. sulfur, phosphorus nitric acid oxidation can produce sulfuric acid and phosphoric acid. Can dissolve a variety of metal forming nitrate solution. Iron, chromium, aluminum and other metals in concentrated nitric acid passivation without using nitric acid, but soluble in dilute nitric acid. Tin, antimony, molybdenum, forming insoluble oxides, gold, and platinum do not react. Nitration or oxidation of nitric acid nitrate storage method can occur with a variety of organic compounds, nitro compounds or oxidation products generated. 3. Stability [12] 4. Incompatibility with stable [13] reducing agent, bases, alcohols, alkali metals, copper, amines, metal powder, calcium carbide, hydrogen sulfide, turpentine, fuel such as sugar, cellulose , sawdust, cotton, straw or waste yarn top 5. Hazardous polymerization [14] 6. The decomposition products are not polymerization [15] 98% of nitrate nitrogen oxides have? commercially available concentrated nitric acid content of about 65%. Fuming nitric acid: colorless to yellowish or slightly brown clear liquid. Department of concentrated nitric acid containing dissolved nitrogen dioxide. 90% to 100% nitric acid. Emit nitrogen dioxide, nitrogen tetroxide of red and yellow smoke. Miscible with water. The relative density by increasing free nitrogen dioxide increases. Concentrated nitric acid containing nitrogen dioxide by 7.5 percent relative density (d204) of 1.526, containing nitrogen dioxide by 12.7% relative density (d204) 1.544. Strong oxidation and corrosion, do not come into contact with the oxide. Avoid contact with skin. Nitric acid production manufacturers, the waterway nitrate, Zhengzhou Longda Chemical provided by Zhengzhou Longda Chemical Products Co., Ltd. Zhengzhou Longda Chemical Products Co., Ltd. (www.longdahuagong.com/) in the field of inorganic acid poured boundless enthusiasm and passion, Zhengzhou Longda Chemical has been customer-centric, the concept of creating value for customers, quality, service to win the market, and sincerely hope to cooperate with the community to create success, to create brilliant. Related businesses welcomed the inquiry, Contact: Manager Xu.