性状：溶于水，有毒，水溶液腐蚀玻璃。对湿敏感。水中溶解度(g/100ml)：15℃时4,25℃时4.3，100℃时5，不溶于乙醇。水溶液部分水解呈碱性 反应。新配制的饱和溶液pH为7.4。其水溶液能使玻璃发毛，但其干燥的结晶或粉末可存放在玻璃瓶内。中等毒，半数致死量(大鼠，经 口)0.18g/kg。有强刺激性。 

备注: 以上描述，仅作参考，并不表示您收到的产品，与此项描述完全相符，产品的出厂标准，请参见质量标准。

质量标准：

项目Item                                           分析纯(AR)              
含量(NaF)Assay,%                                  ≥99.0              
澄清度试验Clarty                                   合格            
水不溶物Insiluble matter in water,%         ≤0.01              
游离酸(以HF计)Free acid,%                    ≤0.05              
游离碱(以Na₂CO₃)Free alkali,%               ≤0.05              
氯化物(Cl)Chloride,%                             ≤0.002            
氟硅酸盐(以SiO₃计)Fluosilicate,%            ≤0.05              
铁(Fe)Iron,%                                        ≤0.002            
重金属(以Pb计)Heavy metals,%               ≤0.001            
钾(K)Pitassium,%                                  ≤0.01                
铁(Fe)Iron,% 　　　　　　                    ≤0.002            
铜(Cu)Copper,%                                    ≤0.005                

项目名称　       　                 　               ACS Grade
含量Assay                                                ≥99.0%
水不溶物Insoluble matter                             0.02%
干燥失重Loss on drying                               ≤0.3%
氯化物(Cl)Chloride                                     ≤0.05%
可滴定酸Titrable acid                                 0.03meq/g
可滴定碱Titrable base                                 0.01meq/g
氟硅酸二钠(Na₂SiF₆)Sodium fluosilicate                   ≤0.1%
硫酸盐(SO₄)Sulfate                                     ≤0.03%
亚硫酸盐(以SO₂计)Sulfite                           ≤0.005%
重金属(以Pb计)Heavy metals                       ≤0.003%
铁(Fe)Iron                                                ≤0.003%
钾(K)Potassium                                         ≤0.02%

品级Grade                                  昆虫细胞培养级, ≥99%  
                                              (for insect cell culture, ≥99%)
外观appearance                            white to off-white powder
水溶性solubility                           complete colorless (1m in water at 20degc)
氟硅酸钠sodium fluosilicate           ≤0.1%
纯度purity by titration                   ≥ 99%
可滴定酸titratable acids                 ≤0.03 meq/g
可滴定碱titratable bases                 ≤0.01 meq/g
昆虫细胞培养测试insect cell test      pass

99.99% metals basis:

外观Appearance                                 白色粉末
X-Ray Diffraction                              Conforms to Structure
ICP:                                                Confirms Sodium Component Confirmed
纯度Purity                                       ≥99.99% Based On Trace Metals Analysis
痕量金属分析Trace Metal Analysis        ≤200ppm by ICP Atomic emission AND AAS

贮存：密封保存

用途：作木材防腐剂,医药防腐剂，焊接助熔剂及造纸工业、本公司生产的产品是牙膏特定级;也可作饮用水的净水剂 ；制革工业的生皮和表皮处理；轻金属冶炼精练和保护层；胶合剂防腐；和沸腾钢的制造。

联合国编号 1690

Risk： R25- R32- R36/38-

Safety : S22- S36- S45-

Hazard : T -