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              有機化學人才網 | 最新人才 | 最新職位 | 技術交易 | 藥物合成
               
                 
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              迭氮化鈉
              2010-08-20 01:39:08 來源:不詳 瀏覽:3733

              1.物質的理化常數:

              國標編號 61033

              cas號 26628-22-8

              中文名稱 迭氮化鈉

              英文名稱 sodium azide

              別 名 迭氮鈉;疊氮化鈉

              分子式 nan3 外觀與性狀 無色六角結晶性粉末

              分子量 65.01 蒸汽壓

              熔 點 275℃(分解) 溶解性 溶于水、液氨,不溶于乙醚,微溶于乙醇

              密 度 相對密度(水=1)1.85 穩定性 穩定

              危險標記 13(劇毒品) 主要用途 用于制造炸藥及用作分析試劑等

              2.對環境的影響:

              一、健康危害

              侵入途徑:吸入、食入、經皮吸收。

              健康危害:本品和氰化物相似,對細胞色素氧化酶和其它酶有抑制作用,并能使體內氧合血紅蛋白形成受阻,有顯著的降壓作用。對眼和皮膚有刺激性。如吸入、口服或經皮膚吸收,可引起中毒死亡。高血壓病人口服本品有顯著降壓作用。本品在有機合成中可有疊氮酸氣體逸出,吸入中毒后出現眩暈、虛弱無力、視覺模糊、呼吸困難、昏厥感、血壓降低、心動過緩等。

              二、毒理學資料及環境行為

              毒性:高毒類。

              急性毒性:ld5027mg/kg(大鼠經口);20mg/kg(兔經皮)

              危險特性:受熱,接觸明火、或受到摩擦、震動、撞擊時可發生爆炸。本品與酸類劇烈反應產生爆炸性的疊氮酸。與重金屬及其鹽類形成十分敏感的化合物。

              燃燒(分解)產物:氧化氮。

              3.現場應急監測方法:

              4.實驗室監測方法:

              離子色譜法(疊氮化物)《環境監測》,周崇群編

              離子選擇電極法(疊氮化物)《環境監測》,周崇群編

              疊氮化鈉的分光光度測定[刊,英]/terpinski e.a.//analyst(lonkon).-1985,110(11).-1403~1405 《分析化學文摘 》1987.7.

              5.環境標準:

              美國 車間衛生標準 0.3mg/m3

              中國(gb4279-84) 疊氮化鉛工業水污染物排放標準 不大于0.5mg/l(疊氮化物,以n計)

              6.應急處理處置方法:

              一、泄漏應急處理

              隔離泄漏污染區,限制出入。切斷火源。建議應急處理人員戴自給正壓式呼吸器,穿防毒服。不要直接接觸泄漏物。小量泄漏:避免揚塵,小心掃起,置于袋中轉移至安全場所。大量泄漏:用塑料布、帆布覆蓋,減少飛散。然后收集、回收或運至廢物處理場所處置。

              二、防護措施

              呼吸系統防護:可能接觸其粉塵時,必須佩戴頭罩型電動送風過濾式防塵呼吸器。緊急事態搶救或撤離時,建議佩戴自給式呼吸器。

              眼睛防護:呼吸系統防護中已作防護。

              身體防護:穿連衣式膠布防毒衣。

              手防護:戴橡膠手套。

              其它:工作現場禁止吸煙、進食和飲水。工作畢,淋浴更衣。單獨存放被毒物污染的衣服,洗后備用。保持良好的衛生習慣。

              三、急救措施

              皮膚接觸:脫去被污染的衣著,用肥皂水和清水徹底沖洗皮膚。

              眼睛接觸:提起眼瞼,用流動清水或生理鹽水沖洗。就醫。

              吸入:迅速脫離現場至空氣新鮮處。保持呼吸道通暢。如呼吸困難,給輸氧。如呼吸停止,立即進行人工呼吸。就醫。

              食入:飲足量溫水,催吐,就醫。

              滅火方法:消防人員必須穿戴全身防火防毒服。由于火場中可能發生容跑龍套爆破的情況,消防人員須在有防爆能力的掩蔽處操作。滅火劑:霧狀水、二氧化碳、泡沫。禁止用砂土壓蓋。

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