Commercially available nitric acid is an azeotrope with water at a concentration of 68% HNO3, which is the ordinary concentrated nitric acid of commerce. This solution has a boiling temperature of 120.5 °C at 1 atm. Two solid hydrates are known; the monohydrate and the trihydrate.
Nitric acid of commercial interest usually consists of the maximum boiling azeotrope of nitric acid and water, which is approximately 68% HNO3, This is considered concentrated or technical grade, while reagent grades are specified at 70% HNO3. The density of concentrated nitric acid is 1.42 g/mL.
XingZhen Chemical Co., Ltd. is located in Wenshui county, Shanxi province. Founded in 1998, XingZhen is private stock enterprise, with independent legal entity which specializes in sodium nitrate, sodium nitrite, potassium nitrate,Potassium Carbonate. We were approved as "AA+ Credit Company" by Shanxi branch of ICBC in 2003. We ranked No. 16 of top100 private enterprise of Shanxi province in 2004. In 2005, we were approved as "trusted company" by Shanxi industrial and commercial bureau, and assessed and approved as one of "top100 private enterprises of Shanxi province" by Shanxi industrial and commercial bureau and Shanxi private enterprise association.
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