188体育

Hangzhou Donglou Bio-nutrient Co., Ltd.
   
 
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Food grade Choline chloride
Choline Bitartrate
L(+)Choline Bitartrate
D(-) Choline Bitartrate
Choline Dihydrogen Citrate (NF.XII)
98% Choline chloride crystal
50% Choline chloride powder
70% or 75% Choline chloride Auqa
50% Choline chloride powder
60% Choline chloride powder
60% Choline chloride powder
D(-)-DMAE BITARTRATE
L(+)DMAE BITARTRATE
DL-DMAE BITARTRATE
Trimethylamine hydrochloride
L-Cystine
L-Leucine
L-Tyrosine
L-Cysteine
Products
 

 
 
L-Cysteine
· CAS No.: 52-90-4
· Molecule Formula: C3H7NO2S
· Molecule Weight: 121.16
· Structure Formula:
·
· Description:white crystal or white powdery .
· Manufacture Standards:USP, AJI
· Specification:

Test items

Specification (AJI)

Specification (USP25)

Appearance

white crystal or white powdery

188体育 Identification

tested by Infrared absorption spectrometer

188体育 Specific rotation

+8.3°- +9.5°

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Solubility

≥ 95.0%

188体育 ---

Chlorine content

≤ 0.04%

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Ammonium salt (NH4 )

188体育 ≤ 0.02%

188体育 ---

Sulfate radical (SO4 )

≤ 0.030%

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Ferric salt (Fe)

≤ 10PPm

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Heavy metal (Pb)

≤ 10PPm

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188体育 Arsenic salt (As2O3)

188体育 ≤ 1PPm

188体育 ---

188体育 Other amino acids

conforms

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188体育 Loss on drying

≤ 0.5%

188体育 ---

Residue on Ignition (sulfated)

≤ 0.1%

188体育 ---

Assay

188体育 98.0-101.0%

188体育 ---

pH

188体育 4.5-5.5

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Organic volatile matter And organic impurities

---

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· Packaging and storage: 25kg/drum, lined with double-layer film bag; Stored in a sealed container, and kept at room temperature.
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