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L-Threonine

[Name]: L-Threonine
 [Structural formula]: CH3CH(OH)CH(NH2)COOH
[Molecular Formula]: C4H9NO3
[Molecular weight]: 119.12
[Properties]: White crystals or crystalline powder,odorless,slightly sweet. Freely soluble in water, practically insoluble in ethanol and in ether.
[Usage]: L-Threonine is one of the essential amino acids, mainly used as food additives, and formatting complex amino acid perfusion and preparation.
Quality standard as FEED GRADE, FCC IV, USP23 or discuss.

 

Items

FEED GRADE

FCC IV

USP23

Assay(on dry basis)

98.0% MIN

98.5% ~ 101.5%

98.5%~101.5%

Appearance

Light yellow powder

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--

Specific rotation

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-26.5 º ~ -29.0 º

-26.7 º ~ -29.1 º

Chloride(Cl)

--

--

0.05% MAX

Sulfate(SO4)

--

--

0.03% MAX

Iron(Fe)

--

--

0.003% MAX

Heavy metals (Pb)

--

20ppm MAX

15ppm MAX

Arsenic

--

1.5ppm MAX

1.5ppm MAX

Loss on drying

1.0% MAX

0.3% MAX

0.2% MAX

Residue on ignition

0.5% MAX

0.1% MAX

0.1% MAX

PH value

--

--

5.0 ~ 6.5

 

[Packing]: In kraft paper bags or in fiber drum 20KG net each.
[Transport and Storage]: Handle with cares to avoid damaging the package, protects them from sunshine or rain. Don't transport it with poisonous or harmful goods. Stored in shaded, cool and dry places.