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Competitive Price for Ada Monosodium - PVP-K30 Cas: 9003-39-8 White to yellowish white powder – XD BIOCHEM

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Competitive Price for Ada Monosodium - PVP-K30 Cas: 9003-39-8 White to yellowish white powder – XD BIOCHEM Detail:

Catalog Number XD90232
Product Name PVP-K30

CAS

9003-39-8

Molecular Formula

C8H15NO

Molecular Weight

141.2108
Storage Details Ambient

Harmonized Tariff Code

39059990

 

Product Specification

Water <5%
Heavy metals <10ppm
pH 3 – 7
Residue on Ignition <0.1%
Aldehydes 0.05% max
Nitrogen 11.5 – 12.8%
Appearance White to yellowish white powder
K Value 27 – 32.4
Hydrazine 1.0% max
Assay 99%

 

We have investigated the physical stability of amorphous curcumin dispersions and the role of curcumin-polymer intermolecular interactions in delaying crystallization. Curcumin is an interesting model compound as it forms both intra and intermolecular hydrogen bonds in the crystal. A structurally diverse set of amorphous dispersion polymers was investigated; poly(vinylpyrrolidone), Eudragit E100, carboxymethyl cellulose acetate butyrate, hydroxypropyl methyl cellulose (HPMC) and HPMC-acetate succinate. Mid-infrared spectroscopy was used to determine and quantify the extent of curcumin-polymer interactions. Physical stability under different environmental conditions was monitored by powder X-ray diffraction. Curcumin chemical stability was monitored by UV-Vis spectroscopy. Isolation of stable amorphous curcumin was difficult in the absence of polymers. Polymers proved to be effective curcumin crystallization inhibitors enabling the production of amorphous solid dispersions; however, the polymers showed very different abilities to inhibit crystallization during long-term storage. Curcumin intramolecular hydrogen bonding reduced the extent of its hydrogen bonding with polymers; hence most polymers were not highly effective crystallization inhibitors. Overall, polymers proved to be crystallization inhibitors, but inhibition was limited due to the intramolecular hydrogen bonding in curcumin, which leads to a decrease in the ability of the polymers to interact at a molecular level.


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Our business puts emphasis over the administration, the introduction of talented staff, plus the construction of employees building, striving hard to boost the standard and liability consciousness of staff members. Our corporation successfully attained IS9001 Certification and European CE Certification of Competitive Price for Ada Monosodium - PVP-K30 Cas: 9003-39-8 White to yellowish white powder – XD BIOCHEM , The product will supply to all over the world, such as: Houston, Cyprus, Manila, Merchandise have been exported to Asia, Mid-east,European and Germany market. Our company has constantly been able to update the items performance and safety to meet the markets and strive to be top A on stable quality and sincere service. If you have the honor to do business with our company. we'll undoubtedly do our very best to support your business in China.
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    5 Stars By Rae from Jakarta - 2017.08.18 18:38
    The company's products can meet our diverse needs, and the price is cheap, the most important is that the quality is also very nice.
    5 Stars By Jodie from Cancun - 2017.11.01 17:04
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    Competitive Price for Ada Monosodium - PVP-K30 Cas: 9003-39-8 White to yellowish white powder – XD BIOCHEM