日日摸夜夜摸人人看电影,JAPANRCEP老熟妇乱子伦视频,欧美丰满熟妇BBB久久久,中文字幕无线码免费人妻,japanese成熟丰满人妻,西西人体自慰GOGO,APP在线免费观看视频,5060国产午夜无码专区,黑料不打烊最新热门事件网站,jizz中国jizz免费

Hotline: +86-571-82225795

Products

L(+)Choline Bitartrate

Product name: L(+)Choline Bitartrate
Structural formula: [HOCH2CH2N+(CH3)3]HC4H4O6-
Molecular formula: C9H19NO7
Molecular weight: 253.25
Properties: white crystalline powder , absorbing moisture easily
Edition: USP 26
Specification:

Item

USP 26

Identification A , B , C

Ok

Assay > %

99.7

As ≤%

0.0003

Heavy metals(as Pb ) ≤%

0.002

Pb ≤%

0.001

Residue on ignition ≤%

0.1

Moisture ≤%

0.5

PH

3.4 ~ 3.7

Optical rotation

+17.5 ~ +18.5

1,4-dioxan

Ok

Escherichia coli

no

salmonella

no

coliform

<300g

number of microzyme

<100g

Total number of bacteria

≤3000g

Appearance

white crystalline powder

Home

Home

About us

About us

Products

Products

>Contact us

Contact us