Wholesale Price China Dipentene - Hydroquinone with CAS 123-31-9 – Unilong
Wholesale Price China Dipentene - Hydroquinone with CAS 123-31-9 – Unilong Detail:
| Melting point | 172-175 °C(lit.) |
| Boiling point | 285 °C(lit.) |
| Density | 1.32 |
| Vapor density | 3.81 (vs air) |
| Vapor pressure 1 mm Hg ( 132 °C) | |
| Refractive index | 1.632 |
| Fp | 165 °C |
| Storage temp | Store below +30°C. |
| Solubility H2O | 50 mg/mL, clear |
| Form Needle-Like Crystals or Crystalline Powder | |
| Pka 10.35(at 20℃) | |
| Color White to off-white | |
| Water Solubility 70 g/L (20 ºC) | |
| Sensitive Air & Light Sensitive | |
| Merck 14,4808 | |
| BRN 605970 | |
| Product Name | Hydroquinone | Batch No. | JL20211025 |
| Cas | 123-31-9 | MF Date | OCT.25,2021 |
| Packing | 25KGS/BAG | Analysis Date | OCT.25,2021 |
| Quantity | 5MT | Expiry Date | OCT.24,2023 |
| Item | Standard | Result | |
| Appearance | White crystalline powder | Conforms | |
| Assay % | 99-101 | 99.9 | |
| Melting point | 171-175 | 171.9-172.8 | |
| Residue after ignition % | ≤0.05 | 0.02 | |
| Fe % | ≤0.002 | ＜0.002 | |
| Pb % | ≤0.002 | ＜0.002 | |
| Conclusion | Conforms | ||
Hydroquinone is a pigment-lightening agent used in bleaching creams. Hydroquinone combines with oxygen very rapidly and becomes brown when exposed to air. Although it occurs naturally, the synthetic version is the one commonly used in cosmetics. Application to the skin may cause allergic reaction and increase skin sun sensitivity. Hydroquinone is potentially carcinogenic and is associated with causing ochronosis, a discoloration of the skin. The u.S. FDA has banned hydroquinone from oTC cosmetic formulations, but allows 4 percent in prescription products.
1,4-dihydroxybenzene, also known as hydroquinone, is an important chemical raw material. Its appearance is white acicular crystal. 1,4-dihydroxybenzene is widely used as an important raw material, intermediate and auxiliary agent for medicine, pesticides, dyes and rubber. It is mainly used as developer, anthraquinone dye, azo dye, rubber antioxidant and monomer polymerization inhibitor, food stabilizer and coating antioxidant, petroleum anticoagulant, synthetic ammonia catalyst, etc. It can also be used as analytical reagent, reducing agent and developer of copper and gold.
25kg/drum.
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Our pursuit and company intention is usually to "Always fulfill our purchaser requirements". We go on to acquire and layout excellent high quality products for both our previous and new consumers and realize a win-win prospect for our customers too as us for Wholesale Price China Dipentene - Hydroquinone with CAS 123-31-9 – Unilong , The product will supply to all over the world, such as: Finland, venezuela, Chile, Item have passed by means of the national qualified certification and been well received in our main industry. Our expert engineering team will often be ready to serve you for consultation and feedback. We are able to also deliver you with cost-free samples to meet your specifications. Ideal efforts will probably be produced to provide you the most beneficial service and solutions. Should you be interested in our company and solutions, please make contact with us by sending us emails or call us straight away. To be able to know our solutions and enterprise. ar more, you'll be able to come to our factory to see it. We'll constantly welcome guests from all over the world to our firm. o build business enterprise. elations with us. Please feel absolutely free to speak to us for organization. nd we believe we will share the best trading practical experience with all our merchants.
By mary rash from Costa rica - 2017.11.01 17:04
This company conforms to the market requirement and joins in the market competition by its high quality product, this is an enterprise that have Chinese spirit.
By Emma from Mongolia - 2018.09.21 11:44
