China New Product Pipes Monosodium Salt - PVP-K30 Cas: 9003-39-8 White to yellowish white powder – XD BIOCHEM
China New Product Pipes Monosodium Salt - 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.
Product detail pictures:
Related Product Guide:
To create much more benefit for consumers is our company philosophy; customer growing is our working chase for China New Product Pipes Monosodium Salt - PVP-K30 Cas: 9003-39-8 White to yellowish white powder – XD BIOCHEM , The product will supply to all over the world, such as: Turin, Cape Town, Singapore, Upon today, we have customers from all over the world, including USA, Russia, Spain, Italy, Singapore, Malaysia, Thailand, Poland, Iran and Iraq. The mission of our company is to provide the highest quality products with best price. We are looking forward to doing business with you!
By Vanessa from Japan - 2018.11.04 10:32
This company can be well to meet our needs on product quantity and delivery time, so we always choose them when we have procurement requirements.
By Mavis from Danish - 2018.12.10 19:03