Complaint
| Product name | Vitamin B2 |
| Others name | Riboflavin |
| CAS | 83-88-5 |
| Apperance | Yellow crystalline powder |
| Specification | 98% |
| Test standard | GB, USP, EP |
| Shelf time | 3 years,keep away sunlight, keep dry |
| Certificate | KOSHER,HALAL,GMP,ISO,MSDS,COA |
ITEM | SPECIFICATION | RESULT |
Appearance | A yellow or orange yellow crystalline powder | Meets |
Identification | Positive | Meets |
Acidity or alkalinity | Check the color of the test solution after adding the respective solutions | Meets |
Lumiflavin | Absorbance of the filtrate at 440nm does not exceed 0.025 (USP); not more than intense than BY6 (EP/BP) | 0.006 Meets |
Absorbance | 0.31~0.33 A373nm/A267nm 0.36~0.39 A444nm/A267nm | 0.32 0.38 |
Particle size | 100% passes through 80 mesh sieve | Meets |
Specific rotation | Between -115°and -135° (BP/EP/USP) | -119°(USP) -126°(BP/EP) |
Loss on drying | ≤ 1.5% | 0.3% |
Heavy metals | <10ppm | Meets |
Residue on ignition | ≤0.3%(USP) ≤0.1%(EP/BP) | 0.1% |
Organic volatile impurities | Method IV <467>(USP) | Meets |
Assay (on dry basis) | 98.0-102.0%(USP) 97.0~103.0%(EP/BP) | 99.0%(USP) 100.0%(BP/EP) |
1.In Cosmetics
2. In Medicine
3. In Food
4. Feed
Other relative materials:
| Product name | Product name |
| Vitamin A acetate | Vitamin A Palmitate |
| Vitamin B1 Thiamine Hydrochloride | Vitamin B2 Riboflavin |
| Vitamin B3 Nicotinic acid | Vitamin B4 Adenine |
| Vitamin B5 Calcium pantothenate | Vitamin B6 Pyridoxine hydrochloride |
| Vitamin B7 Vitamin H, Biotin, D-Biotin | Vitamin B12 Cyanocobalamin |
| Vitamin C, Ascorbic acid | Vitamin K2 |
| Vitamin C palmitate | Vitamin D3 |
| Vitamin E, Tocopherol | Vitamin K1 |
| Other Relative products | |
| Coenzyme Q 10 | Beta-Carotene |
| D-panthenol | Chromium nicotinate |
| Folic acid | Taurine |
| Creatine monohydrate | L-carnitine |
| Inositol | Nicotinamide |
| NMN | NR |
| NADH | PQQ |
| Weight | Packing method |
| 1kg | bag/kg, box outside (double plastic bag + Aluminum foil bag inside) |
| 10kgs,25kg or more | by Drums or carton (3 layers plastic bag inside) |
| Weight | Delivery mothod | Delivery time |
| 1kg-25kgs | EMS,DHL,UPS,Fedex,TNT | 3-7days |
| 25kgs-100kgs | DHL,FedEx,by Air | 3-7days |
| more than 100kgs | by Air | 3-7days |
| by Sea | 10-35days |
1. How do you confirm product quality before order?
Free samples can be provided for your evaluation before ordering, and COA can be supplied of each batch products.
2. Can i get free samples?
Yes, Free samples 1-30grams available based on product value.
3. How long can i get my order?
Usually, Delivery within 4-15days after payment.
Shipping can by International Express(3-8days), by Air(3-5days), by Sea(8-35days) based on quantity and destination, or by your forwarder.
4. How is your customer service?
We provide 24-hour online service by Made in China, or by email, Skype, Whatsapp, telephone.
