L-Cystine CAS: 56-89-3
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L-Cystine CAS: 56-89-3

Availability:
Synonyms: L-Cystine
Molecular Formula:C6H12N2O4S2
Molecular Weight: 240.3
Hazard Class:General cargo
HS Code: 2930909099
Grade:Food Grade
  • 56-89-3

  • bosschemical

  • 56-89-3

L-Cystine  CAS: 56-89-3

Application Scenarios:

Cosmetic Grade:

 

1. Oral Whitening and Anti-aging: L-cysteine is converted into cysteine in the body, a precursor to glutathione, the body's strongest antioxidant. It directly interferes with melanin production in the skin's basal layer, thus it is widely added to whitening pills, spot-removing tablets, or oral beauty serums.

 

2. Hair Care and Nourishing Products: Added to hair growth serums, anti-hair loss shampoos, or hair masks. Although it is poorly soluble in water, in some formulations it can be microencapsulated or combined with other solvents to supplement hair follicle nutrition and repair damaged hair.

 

Food Grade:

 

1. Dough Improver: Although it does not have the strong reducing properties of cysteine, in certain bread or baking processes, it can gradually participate in the exchange of disulfide bonds during gelatinization and baking, helping to stabilize the gluten's skeletal structure and improve the dough's mechanical resilience.

 

2. Flavor and Fragrance Synthesis: As a sulfur-containing amino acid, it reacts with reducing sugars at high temperatures to produce extremely realistic and rich characteristic aromas of meat (pork, beef), toast, coffee, etc. 3. Dairy products and breast milk-like formulas: Used in special medical purpose formula foods and infant formula as an amino acid fortifier to make its amino acid profile closer to that of breast milk.


Technical indicators:

SPEC.

STANDARD

RESULT

CHARACTERISTICS:

WHITE CRYSTALLINE POWDER.

CONFORMS

ASSAY:(ON DRY BASIS)

98.5%~101.5%

99.7%

SPECIFIC ROTATION:

-215°~ -225°

-218°

TRANSMITTANCE:

98.0% MIN.

98.6%

CHLORIDE:

0.02% MAX.

CONFORMS

SULFATE(SO4):

0.02% MAX

CONFORMS

AMMONIUM(NH4)

0.02% MAX

CONFORMS

HEAVY METALS:

10PPM MAX.

CONFORMS

IRON:

20PPM MAX.

CONFORMS

ARSENIC:

1PPM MAX

CONFORMS

RESIDUE ON IGNITION:

0.1% MAX.

0.05%

LOSS ON DRYING:

0.20% MAX

0.16%

OTHER AMINO ACIDS:

CHROMATOGRAPHICALLY NOT DETECTABLE

CONFORMS

PH

5.0-6.5

5.7

LEAD

3PPM

≤3PPM

Total Plate CountPH

1000

1000

Coliforms

Not detected

Not detected


Packaging:

Wacker, 25 kg/paper bag

Our Advantages

  • Specifications & technical advantages: 
    Higher main content and lower impurity levels; batch-to-batch stability; better solubility, particle size, and flowability, facilitating downstream processes.​​​​​​​
  • Quality system advantages: 
    Certification list - ISO 9001, REACH registration number, FDA, Kosher, Halal; each batch comes with a COA, supporting third-party testing (SGS, etc.); full traceability.​​​​​​​
  • Supply chain advantages: 
    Own factory/integrated production; annual production capacity is at full capacity, with plans to expand production; some stock is available for immediate delivery; delivery time is clear.
Transportation
1
Packaging & Loading
25 kg bags with inner PE liner, 40 bags per pallet (1 MT),  shrink-wrapped and fumigation-free; 20 MT per 20' FCL, 28 MT per 40' HQ.
2
Shipping
Sea freight is recommended for bulk orders (30–40 days to Europe/US); samples ship via DHL/FedEx within 3–7 days.  Available terms: FOB Qingdao / CIF / DDP.
3
Dangerous goods
Classified as UN, Class, Packing Group; we provide full DG documentation and comply with IMDG for all ocean shipments.
4
Documents
Commercial invoice, packing list, bill of lading, COA, SDS, and certificate of origin are included with every shipment.
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   +86-15628782329
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