供應(yīng)正丁酸
正丁酸              規(guī)格:  ≥99.5%        產(chǎn)地:  德/美            包裝:  200kg/桶          價(jià)格:  11800元/噸

正丁酸  

Butyric  acid  

Cas號(hào):107-92-6    MDL:    --MFCD00002814    

Beilstein    906770    EINECS:    --203-532-3    

分子式  C4H8O2；  C3H7COOH  

分子量  88.11  

別名酪酸;殺滅菊酸;正丁酸;丁酸;丙基甲酸;乙基乙酸;乙基醋酸;丁酸

n-Butyric  acid

分子結(jié)構(gòu)式    

性狀  無(wú)色至淡黃色油狀液體。有不愉快酸敗氣味，極稀溶液也有汗臭味。能與水、醇、醚混溶。其鈣鹽在熱水中溶解度小于冷水中(與異丁酸不同)。

熔點(diǎn)：-7--5℃  

沸點(diǎn)：162-165℃

密度：0.96

閃點(diǎn)：69℃

折射率n20/D：1.3965-1.3995    

質(zhì)量標(biāo)準(zhǔn)      

    項(xiàng)目Item　　　　　　　　　　                                            分析純

                                                                                                      (AR)

含量Assay,%　　　                                                              ≥  99.5

相對(duì)密度Specific  gravity  (20/20°C)                          0.955～0.961

灼燒殘?jiān)?以硫酸鹽計(jì))Ignition  residue,%                      ≤  0.01

沸程Boiling  range,℃                                                          160～164

折光率Refractive  index  n20/D                                        1.3980～1.4000

酸值  mg  KOH/g                                                                        634-638

水份water  %    (K-F法)                                                          ≤0.1

  

項(xiàng)目                                                                                            化學(xué)純      

                                                                                                      (CP)  

沸程Boiling  range/℃                                                      161.0～165.0    

含量Assay                                                                                ≥99.0%    

相對(duì)密度Specific  gravity  (20/20°C)                        0.955～0.961    

溴值bromine  value/（Br2g/100g）                                    ≤0.01    

折光率Refractive  index  n20/D                                      1.398～1.400      

貯存  密封保存。  

用途  用以測(cè)定脂肪溶解作用的臨界溫度。表面張力的測(cè)定。電解法測(cè)定銅時(shí)，用以消除鐵的影響。  

聯(lián)合國(guó)編號(hào)  2820  

Risk：    R34-    

Safety  :    S26  -  S36  -  S45  -    

Hazard  :    C  -