MDL：
MFCD00036391

Molecular Formula：
C36H70O4Mg；[CH3(CH2)16CO2]2Mg

Molecular Weight：
591.25

Alias：
十八酸鎂，二堿式硬脂酸鎂 Stearic acid magnesium salt

Product order：

Name	Specifications	Packing	Price	Delivery
Magnesium stearate	AR	250g	RMB 44	現(xiàn)貨
Magnesium stearate	AR	1kg	RMB 187	現(xiàn)貨
Magnesium stearate	USP，EP	500g	RMB 70.4	促銷

Character：
硬脂酸鎂外觀為細(xì)小的輕的白色粉末，手感滑膩，不溶于水、乙醇和乙醚，溶于熱水、熱乙醇，遇酸分解為硬脂酸和相應(yīng)的鎂鹽。有刺激性。
密度：1.028
熔點：130-140 ℃

Quality Standard：
項目                                             分析純
                                                  (AR)
純度Purity(Mg)                                   4.0%~5.0%(絡(luò)合法Complexometry)
外觀Appearance                                   細(xì)小，輕的白色粉末
干燥失重Loss on drying                           <6 %(1 g, 105°C)
重金屬Heavy metals                               ≤0.001%
痕量分析Trace analysis ：
鉛Pb                                             < 10 ppm
氯Cl                                             < 0.1 %
硫酸根SO4                                        ≤0.5%
砷(As)                                           ≤3mg/kg
硬脂酸和棕櫚酸相對含量stearic and palmitic acid  ≥90.0%
硬脂酸Stearic acid                               ≥40.0%(GC)

品級Grade                                       Ph. Eur., BP  
硬脂酸stearic acid                              ≥40%(GC)
硬脂酸和棕櫚酸stearic and palmitic acid         ≥90%
鎂Mg basis (calc on dry sub.)                   4.0-5.0%
酸度或堿度acidity or alkalinity,                complies
微生物雜質(zhì)microbiological impurity,             in accordance
溶劑殘渣residual solvents,                      complies
干燥損失loss on drying, 105 °C                 ≤6.0%
酸值acid value                                  195?210(fatty acid)
氯chloride (Cl-):                               ≤1000 ppm
硫酸根sulfate (SO42-):                          ≤5000 ppm
鎘Cd:                                           ≤3 ppm
鎳Ni:                                           ≤5 ppm
鉛Pb:                                           ≤10 ppm
鑒別試驗identity                                passes test 

Storage：
密封干燥保存。
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