最新国产精品剧情在线SS,中文无码肉感爆乳在线观看,JAPAN日本人妻熟老太,成年在线观看免费人视频

產(chǎn)品詳情
  • 產(chǎn)品名稱:美國Polysciences公司Polyethylenimine, Linear (MW 25,000)

  • 產(chǎn)品型號:23966
  • 產(chǎn)品廠商:美國原裝進(jìn)口
  • 產(chǎn)品文檔:
你添加了1件商品 查看購物車
簡單介紹:
促轉(zhuǎn)染試劑美國Polysciences公司Polyethylenimine, Linear (MW 25,000) Polysciences現(xiàn)貨促銷 Polyethylenimine, Linear (MW 25,000)Catalog No: 23966-2 Packaging Size: 2 g CAS Number: 9002-98-6 美國Polysciences公司Polyethylenimine, Linear (MW 25,000)
詳情介紹:
轉(zhuǎn)染試劑美國Polysciences公司Polyethylenimine, Linear (MW 25,000)
Polysciences現(xiàn)貨促銷
Polyethylenimine, Linear (MW 25,000)Catalog No: 23966-2                 
Packaging Size: 2 g
CAS Number: 9002-98-6

美國Polysciences公司Polyethylenimine, Linear (MW 25,000)


促轉(zhuǎn)染試劑Polyethylenimine, Linear (MW 25,000)
Catalog No: 23966-2                 Packaging Size: 2 g
CAS Number: 9002-98-6

 美國Polysciences公司Polyethylenimine, Linear (MW 25,000)
Linear polyethylenimines (PEIs) contain all secondary amines, in contrast to branched PEIs which contain primary, secondary and tertiary amino groups. The linear PEIs are solids at room temperature where branched PEIs are liquids at all molecular weights. Soluble in hot water, cold water at low pH, methanol, and ethanol. One end of the polymer chain methyl; other end hydroxyl. Contains up to 7-8% of poly(2-ethyl-2-oxazoline) Insouble in: benzene, ethyl ether, acetone and cold water.
 美國Polysciences公司Polyethylenimine, Linear (MW 25,000)
Formula:
(C2H5N)x
Molecular Weight: 25,000
Melting Point: 73-75o
TSCA
Hazards: Unknown
Handling: Gloves & fume hood
Storage: Store at room temperature
Code: U5g - (hazard/handling/storage codes)

Polysciences現(xiàn)貨促銷 Polyethylenimine, Linear (MW 25,000) 23966-2
美國Polysciences公司Polyethylenimine, Linear (MW 25,000)

姓名:
電話:
您的需求:
 

滬公網(wǎng)安備 31011002002624號