Audited Supplier
CAS No.9003-39-8
Molecular Formula:(C6H9NO)n
Molecular Weight:111.143
| No. | Items | Specification |
| 1 | Appearance | White to slightly creamy white powder, hygroscopic. |
| 2 | Solubility | Freely soluble in water |
| 3 | Identifications A: By IR | The transmission minima or absorption maxima in the spectrum obtained with the substance should corresponds in position and relative size to those in the povidone reference standard spectrum. |
| 4 | B: By Chemical test | An orange yellow precipitate should be formed |
| 5 | C: By Chemical test | A pale blue precipitate is formed. |
| 6 | D: By chemical test | A red coloured should be produced. |
| 7 | E: Solubility | 0.5 gm sample should dissolve in 10 ml water |
| 8 | pH | 4.0 - 7.0 |
| 9 | K-value | 81.0 - 96.3 |
| 10 | Aldehydes, ppm | ≤500 |
| 11 | Peroxides, ppm | ≤400 |
| 13 | hydrazine, ppm | ≤1 |
| 14 | Impurity A(1-vinylpyrrolidin-2-one), ppm | ≤10 |
| 16 | Heavy Metals, ppm | ≤10 |
| 17 | Lead (Pb), ppm | ≤5 |
| 18 | Water, % | ≤5.0 |
| 19 | Sulphated ash, % | ≤0.1 |
| 20 | Nitrogen content, % | 11.5 - 12.8 anhydrous basis |
| 21 | Total Aerobic Plate count, CFU/g | ≤100 |
| 22 | Total Mold/Yeast count,CFU/g | ≤100 |
| 23 | E.coli, CFU/g | Not detected |
| 24 | *Staphylococcus Aureus, CFU/g | Not detected |
| 25 | *Pseudomonas Aeruginosa, CFU/g | Not detected |
| 26 | Salmonella, CFU/g | Not detected |
In addition, we also provide PVP K15, K17, k25 - pharma grade; PVP K30, K90 Cosmetic Grade
ComWin International Co.,Ltd was founded in 1992. Changzhou ComWin Fine Chemicals Co.,Ltd. as a subsidiary was established in 2003. Its manufacturing site is situated in Huangyan Economic Development Zone, Taizhou with the total area approximately 70,000 and nearly 80 staff.
ComWin is specializing in producing and distributing APIs, Animal healthcare products, Nutritional Ingredients. Our main products are 5-Chloro-2-pentanone, 2-MeTHF, Rosuvastatin Calcium, Fipronil, Cloprostenol Sodium and Noni Juice.
International logistics services is our highlighted strengths, such as cold-chain, hazardous shipment, door to door, which we've been providing to Sanofi, Merial, Vetoquinol, IMCD, Reckitt Benckiser, etc.
Our Parterners:
Customer Comment:
Q1:Can i get some samples?
A: Yes, we can supply the free sample, but the shipping cost be paid by our customers.
Q2: Which kind of payment terms do you accept?
A: T/T, LC, D/P and Flexible payment by Credit approved.
Q3:Which transportation do we use?
A:Samples could be DHL, UPS, TNT, EMS, Fedex, and so on. For mass orders, it will be delivered by air or sea.
Q4: How about your delivery time?
Generally, it takes 5 working days after receiving your advance payment.
Q5: How do you treat quality complaint?
A: First of all, our quality control guarantees that quality is accomplished with the confirmed specification, and we take 100% responsibility for our orders.
Q6:How can we trust you?
A: You are always warm welcomed to visit us at any time. Before we start B2B, MIC has audited our company on-spot and approved our credit.
Q7:Do you test all your goods before delivery?
A:Yes, we have 100% test before delivery.
A1 Quality control: We take quality as our life. We strictly control the quality of each process and establish a complete quality control system.
A2 carefully packing: 1kg, 5kg, 15kg, 20kg, 25kg can be packed in different specifications. Packaging can be customized according to customer requirements. Aluminum foil bag and carton. Ensure the safety of transportation. And free samples are available.
A3 Quality service: We have a professional sales DEP. quality DEP. and logistics DEP for quality assurance and service satisfaction.
