Sodium Nitrite - Sodium Nitrite

NaNO ₂ (69.00). It is obtained by extraction with water from the product of reduction of molten sodium nitrate with lead. In industry, it is produced by absorbing a nearly 1:1 mixture of nitric oxide and nitrogen dioxide into sodium hydroxide. It is an orthorhombic, colorless or pale yellow ionic crystal. _{NO 2} ^－ is N-O 1.24 Å, ∠ON-O 115°. Density 2.17 g cm ⁻³ . Melting point 271 °C. Decomposes at 320 °C. It is deliquescent and easily soluble in water. Its aqueous solution is weakly alkaline. It is used in the synthesis of organic diazonium salts, meat processing, rust prevention, textile bleaching, metal surface treatment, analytical reagent (diazotization titration), etc. It is also used as a vasodilator to treat patients with cyanide poisoning. [CAS 7632-00-0]

Source: Morikita Publishing "Chemical Dictionary (2nd Edition)" Information about the Chemical Dictionary 2nd Edition

NaNO₂(69.00)．溶融した硝酸ナトリウムを鉛で還元した生成物から水で抽出すると得られる．工業的には，一酸化窒素と二酸化窒素のほぼ1：1混合ガスを水酸化ナトリウムに吸収させてつくる．斜方晶系，無色または淡黄色のイオン結晶．NO₂^－は，N-O1.24 Å，∠O-N-O115°．密度2.17 g cm^－3．融点271 ℃．320 ℃ で分解する．潮解性があり，水に易溶．水溶液は弱アルカリ性を示す．有機ジアゾニウム塩の合成，食肉加工，さび止め，繊維の漂白，金属の表面処理，分析試薬(ジアゾ化滴定)などに用いられる．また，血管拡張剤として，シアン中毒患者の治療にも利用される．[CAS 7632-00-0]

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