供應(yīng)異煙酸
異煙酸            規(guī)格:  ≥99.0%      產(chǎn)地:美  德                包裝:  25kg/桶          價(jià)格:230元/公斤

異煙酸  

Isonicotinic  acid  

Cas號(hào):55-22-1      MDL:    --MFCD00006429  

Beilstein    109599    EINECS:    --200-228-2  

分子式  C6H5NO2    

分子量  123.11  

別名異煙酸;吡啶-4-甲酸;異尼克酸;4-吡啶甲酸;4-吡啶羥酸;4-噼  啉酸;吡啶-4-羥酸;4-吡啶羧酸

Pyridine-4-carboxylic  Acid

4-Picolinic  acid

4-Pyridinecarboxylic  acid    

分子結(jié)構(gòu)式    

性狀白色片狀結(jié)晶。無(wú)氣味。能升華（260℃，2.00kPa）。微溶于冷水，較多溶于熱水，幾乎不溶于苯、沸乙醇。飽和水溶液pH3.6。

熔點(diǎn)：316℃  

質(zhì)量標(biāo)準(zhǔn)      

    項(xiàng)目                                                                      分析純

                                                                              （AR）

含量assay                                                            ≥99%  （HPLC）  

鐵iron  content                                                  ≤  0.003%  

硫酸鹽sulfate                                                    ≤  0.45  %

干燥失重drying  loss                                        ≤  0.05  %

氯化物chlorid                                                    ≤0.012%  

  

項(xiàng)目                                                                      化學(xué)純      

                                                                                (CP)  

干燥失重drying  loss                                        ≤0.5%    

含量assay                                                            ≥98.0%    

氫氧化鈉溶解試驗(yàn)Solubility  in  NaOH            合格    

熔點(diǎn)Melting  point/℃                                      ≥310.0    

鐵Iron(Fe)                                                          ≤0.004%    

灼燒殘?jiān)黂esidue  ignition                              ≤0.5%      

貯存密封避光保存。  

用途有機(jī)合成。本品為醫(yī)藥中間體，主要用于制備異煙肼（雷米封）。也可以用它制異煙酰腙、酯類等衍生藥物，農(nóng)藥工業(yè)也可以制抗倒胺等。  

聯(lián)合國(guó)編號(hào)      

Risk：    R36/37/38-    

Safety  :    S26-  S36-    

Hazard  :    Xi  -