日本在线观看,亚洲成av人无码综合在线观看,高潮毛片无遮挡高清免费视频,国产手机在线αⅴ片无码观看

訂購電話:4001650900

Protocatechuic acid

Cas:
99-50-3
Molecular Structure:
MDL:
MFCD00002509
Molecular Formula:
C7H6O4;(HO)2C6H3CO2H
Molecular Weight:
154.12
Alias:
原兒茶酸 3,4-Dihydroxybenzoic acid Catechol-4-carboxylic Acid Pyrocatechol-4-carboxylic Acid
Product order:
Name Specifications Packing Price Delivery
Protocatechuic acid 97% 25g RMB 209 Consulting service
Protocatechuic acid 97% 100g RMB 649 Consulting service
Protocatechuic acid 97% 500g RMB 2189 Consulting service
Protocatechuic acid 分析標準品,99% 250mg RMB 209 Consulting service
Character:
露置空氣中變色。溶于乙醇和乙醚,溶于50份水,不溶于苯。水溶液遇三氯化鐵呈綠色,遇碳酸氫鈉呈暗紅色。有刺激性。
密度:1.54
熔點:200℃
Quality Standard:
外觀Appearance                          米黃色至棕色結(jié)晶粉末
紅外光譜鑒別Infrared spectrometry       和對照品匹配
熔點Melting point                       199°C - 203°C
純度Purity                              ≥97.0% (中和滴定)  
Storage:
密封避光保存。
Related Products
上海紫一試劑廠   ? 2025 All Rights Reserved      備案號:滬ICP備19037119號-1     
網(wǎng)站地圖:
試劑CAS試劑分類試劑產(chǎn)品實驗儀器耗材分類實驗儀器耗材新聞資訊
   滬公網(wǎng)安備 31012002003055號