品名

二氟化锡; 氟化锡(II); 氟化亚锡; Tin difluoride; Tin(II)fluoride; Stannous fluoride; CAS：7783-47-3

理化性质

白色单斜的片状结晶,有光泽。分子式SnF2。分子量156.70。相对密度4.57(25℃)。熔点210～215℃。易溶于水(水中溶解度约30%)。遇空气生成氟氧化锡。

接触机会

用2%的水溶液涂齿,用于预防龋齿,故也用于制牙膏。生产与使用中可接触。

国内主要生产厂商:上海试剂三厂、广州化学试剂厂、天津市化学试剂三厂

侵入途径

可通过消化道与呼吸道吸收。

毒理学简介

大鼠经口LD50: 377 mg/kg。小鼠经口LD50: 184 mg/kg。

中等毒，刺激性小。

IDLH: +400 mg/cu m /Tin (inorganic cmpd except oxides as Sn)/ [R65]

临床表现

未见急性中毒报告。

美国HSDB引用文献：

*A 5 MINUTE APPLICATION OF 8% STANNOUS FLUORIDE TO DEEP CAVITIES IN HUMAN TEETH COULD PRODUCE LOCAL NECROSIS AND MODERATE INFLAMMATION OF THE PULP ADJACENT TO THE CAVITY FLOOR. NO SUCH EFFECTS WERE OBTAINED AFTER A 30 SECOND APPLICATION. [R21]

*STAINING OR PIGMENTATION ... OF TEETH RESULTING FROM TOPICAL APPLICATION OF CONCN SOLN OR GELS OF STANNOUS FLUORIDE HAS BEEN REPORTED ESPECIALLY IN PATIENTS WITH POOR ORAL HYGIENE. THE PIGMENTATION WHICH IS PROBABLY STANNOUS SULFIDE, IS GENERALLY ASSOCIATED WITH A CARIOUS LESION OR A HYPOCALCIFIED AREA OF THE ENAMEL, OR WITH PLAQUE. ... [R5, 2160]

处理

对症处理。

标准

车间空气卫生标准:各国均参照锡的无机化合物（2mg/m^3(Sn)）和无机氟化物（2.5 mg(F)/m3）

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