China OEM Astrazon Brilliant Red 4g Liquid - Hydroquinone with CAS 123-31-9 – Unilong
China OEM Astrazon Brilliant Red 4g Liquid - 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 1.6320
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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With a sound business credit, excellent after-sales service and modern manufacturing facilities, we have earned an excellent reputation among our customers across the world for China OEM Astrazon Brilliant Red 4g Liquid - Hydroquinone with CAS 123-31-9 – Unilong , The product will supply to all over the world, such as: Ethiopia, Vancouver, Eindhoven, We follow up the career and aspiration of our elder generation, and we are eager to open up a new prospect in this field, We insist on "Integrity, Profession, Win-win Cooperation", because we have a strong backup, that are excellent partners with advanced manufacturing lines, abundant technical strength, standard inspection system and good production capacity.
By Dominic from venezuela - 2018.05.13 17:00
We have been cooperated with this company for many years, the company always ensure timely delivery ,good quality and correct number, we are good partners.
By Karl from Honduras - 2017.12.19 11:10
