Food Additive 25kg/Drum USP40 Powder L-Proline Base CAS 147-85-3 L-Proline

Model NO.
147-85-3
Colour
White
Transport Package
According to Customer Needs
Specification
1kg
Trademark
DISHA
Origin
China
HS Code
2933990090
Production Capacity
5 Ton/Month
Reference Price
$ 9.00 - 45.00
Contact Us

Product Description

Food Additive 25kg/Drum USP40 Powder L-Proline Base CAS 147-85-3 L-Proline

Model NO CAS 147-85-3
Trademark DISHA
Origin China
Molecular formula C5H9NO2
Production Capacity 5 ton/Month


Product Description
Food Additive 25kg/Drum USP40 Powder L-Proline Base CAS 147-85-3 L-Proline Food Additive 25kg/Drum USP40 Powder L-Proline Base CAS 147-85-3 L-Proline

Specifications
Food  Grade:
Item AJI92 EP8 USP36
Assay 99.0%  ~ 101.0% 98.5% ~ 101.0% 98.5% ~ 101.5%
PH Value 5.9 ~ 6.9 --- ---
Specific Rotation - 84.5 ° ~ - 86 .0° -84. 0 ° ~ -86.0° -84. 3 ° ~ -86. 3 °
Transmittance ≥98.0% clear  & colorless ---
Chloride(as Cl) ≤0.02% ≤0.02% ≤0.05%
Ammonium(as NH 4 ) ≤0.02% ≤0.02% ---
Sulfate(as SO 4 ) ≤0.02% ≤0.03% ≤0.03%
Iron(as Fe) ≤10ppm ≤10ppm ---
Heavy metal(as Pb) ≤10ppm ≤10ppm ≤15ppm
Other amino acids conform conform conform
Loss on drying ≤0.30% ≤0.50% ≤0.40%
Residue on ignition ≤0.10% ≤0.10% ≤0.40%
Ninhydrin-positive substances --- conform ---

Pharmaceutical Grade:
Item AJI92 EP8 USP36
Assay 99.0%  ~ 101.0% 98.5% ~ 101.0% 98.5% ~ 101.5%
PH Value 5.9 ~ 6.9 --- ---
Specific Rotation - 84.5 ° ~ - 86 .0° -84. 0 ° ~ -86.0° -84. 3 ° ~ -86. 3 °
Transmittance ≥98.0% clear  & colorless ---
Chloride(as Cl) ≤0.02% ≤0.02% ≤0.05%
Ammonium(as NH 4 ) ≤0.02% ≤0.02% ---
Sulfate(as SO 4 ) ≤0.02% ≤0.03% ≤0.03%
Iron(as Fe) ≤10ppm ≤10ppm ---
Heavy metal(as Pb) ≤10ppm ≤10ppm ≤15ppm
Other amino acids conform conform conform
Loss on drying ≤0.30% ≤0.50% ≤0.40%
Residue on ignition ≤0.10% ≤0.10% ≤0.40%
Ninhydrin-positive substances --- conform ---



L-Proline is one of important amino acids which form protein in human boby. It is the essential material of amino acid transfusion. And it is also the main intermediate for compounding Captopril, Enalapril and other antihypertensive drugs. It has been widely used in food, medicine and other industries. It is made by fermentation of corn. So it is more safer.

1. Used as nutritional supplement.
2 . Used as the materials of compound amino acid infusion. Used in malnutrition, protein deficiency disease, stomach disease, scald and protein supplement after surgery.

There are two kinds of L - proline. One is direct fermentation, using glucose and yellow short bacillus mutant or glutamic acid bacillus wild strains, L - proline obtained with microbial fermentation; 2 it is chemical synthesis to glutamic acid as raw materials, and anhydrous ethanol under the sulfuric acid catalytic esterification, and add triethanolamine to amine sulfate free, glutamic acid - delta - ethyl ester. Reoccupy metal reductant glutamic acid  reduction - delta - ethyl ester, raw proline, finally the purification can be rough on the proline. Small craft take L - glutamic acid esterification said 147 g, into three bottle neck, add 1 L, anhydrous ethanol mix cool to 0 ºC, and then add 80 ml - H2SO4, at 0-5 ºC stirring reaction 1 h, 1 h at room temperature to continue response, response all clear. Under 20 ºC and to pH 8-8.5, precipitation white crystalline, 1 h at room temperature and stirring, let stand for 5 ºC cooling filtration, crystallization, washing with 95% ethanol, drained after vacuum drying, to glutamic acid ethyl - delta - about 141 g. Melting point of 178-180 ºC, the yield of 80% 83%. [alpha] 32 + 29.8 d (C = 1 g/ml 10% HCl). Reduction in three flask into glutamic acid ethyl - delta - 175 g, add distilled water, 875 ml, stir cool to 5 ºC, add in another KBH4 53.9 g, about 1 h adds, at room temperature and 1 h reaction, heat preservation 50 ºC reaction 3 h. Cooled to 0 ºC, add 6 mol/L HCl to pH4, filtering the filtrate, quick rough L - proline aqueous solution. Ion exchange resin - alumina column chromatography separation and purification raw will L - proline aqueous solution, with 4 ml/min flow entering into the 732 - H + resin exchange column charge 10 ml acid resin (1 g). First rinse with distilled water to neutral, then use 1 mol/L  elution, collection of L - containing proline eluent (thin layer chromatography with silica gel G control). Condensed the eluent decompression to dry, then use a small amount of water dissolves, it into neutral alumina column, again with 60% ethanol elution solution (or a thin layer chromatography with silica gel G control).

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Packing   &  Transportation


Packaging:  According to customer requirements

Food Additive 25kg/Drum USP40 Powder L-Proline Base CAS 147-85-3 L-Proline Transportation : Door to Door
Shipping can be DHL, UPS, TNT, EMS, Fedex, etc.
For large orders, they will be delivered by air or sea.
We have special transportation channels.
Food Additive 25kg/Drum USP40 Powder L-Proline Base CAS 147-85-3 L-Proline
Food Additive 25kg/Drum USP40 Powder L-Proline Base CAS 147-85-3 L-Proline
Company Profile

Company Information

We are Hebei Disha Import and Export Trading Co., Ltd., a professional chemical raw materials manufacturer with many years experince, 
Our company specializes in exporting high quality Pharmaceutical intermediates,Pharmaceutical raw materials,Phenylephrine,Safe Organic Solvents, Plant Extract, Spice Auxiliary and Hormones.
and we have our own delivery line to Canada, USA, UK,Spain, Poland, Netherland, Germany,Russia,Kazakhstan,Ukraine,etc. Door to door without any customs clearance issues.
Our products are produced on the basis of best technical team, advanced equipment, high qualified management which meet the requirements of security and environmental protection.
Food Additive 25kg/Drum USP40 Powder L-Proline Base CAS 147-85-3 L-Proline
Our Advantages

Our company's strengths

1.Our products are of high quality and the price is competitive
2. Standard: BP/USP/EP/ enterprise standard
All purities ≥99%
3. Fast and safe delivery and careful shipment, a variety of transportation modes for you to choose.
Customs clearance rate is 99% or higher

Food Additive 25kg/Drum USP40 Powder L-Proline Base CAS 147-85-3 L-Proline Food Additive 25kg/Drum USP40 Powder L-Proline Base CAS 147-85-3 L-Proline
FAQ

Q1: What's your MOQ?

A:MOQ is 1KG.

Q2:How about delivery leadtime?
A:Delivery lead time: About 3-5 days after payment confirmed. (Chinese holiday not included)

Q3: Is there a discount?
A:Different quantity has different discount.

Q4:How to start orders or make payments?
A:Proforma invoice will be sent first after confirmation of order, enclosed our bank information. Payment by T/T, Western Union or Bitcoin.

Q5: How do you treat quality complaint?
A:First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem caused by us, we will send you free goods for replacement or refund your loss.

Q6. We don't know you at all, how can we trust you?



Q7.Do you test all your goods before delivery?
A:Yes, we have 100% test before delivery,International Authorized Third-Party Test for the products if you need are highly welcomed.

If you have any other questions , please feel free to contact with us.

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