2021免费的一级片,欧美h视频,国产精品黄在线观看免费网站,18片毛片60分钟免费观看,一级毛片大片毛片花片,久久99久久99精品观看,大香大香伊人在钱线久久

Welcome to Hebei Huaheng Biological Technology Co., Ltd!
Products
Contact
Hebei Huaheng Biological Technology Co., Ltd
Address: No.777 Xinghua South Street,Jizhou City,Hebei Pro.,China Postal Code: 053200
Postal Code: 053200
TEL:0318-8628255
FAX:0318-8628286
E-mail:jizhouhuaheng@163.com
Web site:m.marcsantamans.com/en
Current position: Products > Amino Acid > L-Proline
L-Proline


Amino Acid

L-Proline
Chemical Name:H-Pro-OH~(S)-Pyrrolidine-2-carboxylic acid

Structure Formula:

Molecular Formula:

C5H9NO2

Molecular Weight:

115.13

Cas No:

[147-85-3]

Characteristics:

White crystalline powder  

Quality Standards:

 AJI97

Item Specification (AJI97)
Appearance White crystals or crystalline powder
Assay,%99.0~101.0
Specific Rotation-84.5°~-86.0°
pH value5.9~6.9
Loss on drying,%≤0.3
Heavy Metals (as Pb),%≤0.001
Residue on Iginition,%≤0.1
Arsenic (as As),%≤0.0001
Chloride,%≤0.02
Amonium(NH4),%≤0.02
Sulfate(SO4),%≤0.02
Iron (Fe),%≤0.001
Other amino acidsNot detd.

Package and Transport:

With round paperboard drum 25kgs per drum.

Storage:

Kept in a light-proof, well-closed, dry and cool place. The expiry date is for two years.



本文地址:m.marcsantamans.com/en/products_18.html
           
上一個產品:L-Lysine monohydrochloride
下一個產品:L-Serine
Copyright:Hebei Huaheng Biological Technology Co., Ltd.
Address: No.777 Xinghua South Street,Jizhou City,Hebei Pro.,China Postal Code: 053200
TEL:0318-8628255
FAX:0318-8628286
E-mail:jizhouhuaheng@163.com
Web site:http://m.marcsantamans.com

WeChat public number
Link: 暫無友情鏈接 ! |