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Product Name: |
Hydroquinone Powder |
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Appearance: |
White to off-white Crystal Powder |
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CAS Number: |
123-31-9 |
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Specification: |
99% |
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Melting Point: |
172 to175℃ |
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Formula: |
C6H6O2 |
Products Description
What is Hydroquinone Powder?
Hydroquinone,It's a phenolic compound, also known as 1, 4-dihydroxybenzene.A compound in which two para-hydrogens of benzene are replaced by hydroxyl groups.The chemical formula is C6H6O2. It is a white crystalline powder, mainly used in the production of black and white developer, anthraquinone dye, azo dye, rubber antioxidant, stabilizer and antioxidant.
Basic information
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National standard number |
61725 |
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CAS Number: |
123-31-9 |
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English Name: |
p-Dihydroxybenzene;p-Hydroquinone |
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Other Name: |
Hydroquinone |
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Formula: |
C6H6O2;HOC6H4OH |
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Formula weight: |
110.11 |
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Melting Point: |
170.5℃ |
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Density: |
Relative density (water =1)1.33 |
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Vapour Pressure: |
165℃ |
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Solubility: |
Soluble in water, soluble in ethanol, ether |
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Stability: |
stabilization |
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Appearance and character: |
White crystal |
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Application: |
Black and white developer, anthraquinone dye, azo dye, rubber antioxidant, stabilizer and antioxidant were prepared |
COA of Black Pepper Extract
Certificate of Analysis
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Product Name |
Hydroquinone powder |
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Batch No |
2024090001 |
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Quantity |
3900kg |
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Production date |
2024-09-17 |
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Expiry Date |
2026-09-16 |
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Items |
Standard |
Results |
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Appearance |
White crystalline powder |
Conform |
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Hydroquinone Assay (HPLC) |
99.0-100.5% |
100.15% |
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Pyrocatechol Assay |
≤0.05 |
Conform |
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PH |
4.0-5.0 |
4.5 |
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Water content |
＜0.5% |
0.02% |
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Melting Point |
111-116℃ |
113-115℃ |
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Sulphated ash |
≤0.5% |
0.15% |
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Heavy Metals(ppm) |
≤10ppm |
Conform |
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Arsenic |
＜2ppm |
Conform |
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Total Plate |
＜1000CFU/g |
Conform |
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Yeast&Mold |
＜100CFU/g |
Conform |
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Salmonella |
Negative |
Conform |
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Conclusion |
Conform |
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Application of Hydroquinone Powder
1.Hydroquinone exists as a reducing agent in the developer, and often blended with developers such as Metol and dissolved in sodium carbonate solution.
2.It is widely added to anti-freckle and whitening cosmetics, commonly found in lotions, creams and essences.
3.In the medical field, it is often added to topical skin medications, such as ointments or gels, and is usually mixed with products such as retinoic acid for use.
Benefits of Hydroquinone Powder
1.Hydroquinone is also known as a "skin whitener" because of its powerful whitening effect. Melanin is the main element that determines skin color, and excessive production can lead to pigmentation such as age spots and freckles. Hydroquinone inhibits the activity of tyrosinase, an enzyme that plays an important role in the production of melanin, which in turn can inhibit the action of melanin (the pigment that causes age spots), thereby inhibiting melanin production and promoting the improvement of existing pigmentation. Reduce or eliminate age spots
2. Hydroquinone has the effect of acne scar desalination, hydroquinone is currently widely used in the clinical application of dermatology, for acne scars on the skin, melasma, freckles, age spots, sun spots and so on can be used, in addition to the pigmentation left after skin injury can also produce significant effects.malignant cells, it acts as a pro-oxidant to clear reactive oxygen species (ROS) and trigger mitochondrial apoptosis, thus playing an anticancer role.
limitation of Hydroquinone Powder
1.The risk is high, especially in the cosmetics field. Long-term use can cause skin sensitivity and pigment loss. Therefore, the concentration must be strictly controlled before use or a doctor's prescription is required.
2.Other EU countries have restrictions on the use of hydroquinone in cosmetics. Xi'an Tongze Biological can provide the following affordable alternative products, like Alpha Arbutin, kojic acid, azelaic acid and so on ,So choose according to your requriment.
Packing
Shipping and Payment
Customer feedback
FAQ
Q: Can I get some samples for Hydroquinone Powder ?
A: Yes, 10-20g sample for free(not including Fedex shipping charge). Company principle:sample freight charge would be deducted from the further order.
Q: How to control and quality assurance?
A: All goods would be qualified before shipment, please see below:
1. Inspection center equipped with instruments of HPLC, GC etc, R&D and QC for testing of each batch.
2. Free sample can be supplied for quality testing and confirmation.
3.Visit our factory and do factory audit are welcomed.
4.Cooperated with third-party test agency for testing heavy metals, pesticide residues, allergen etc.
Q: Can you guarantee I can get my goods without any custom problem?
A: Yes,We have exported ingredients for more than 10 years and have professional experiences for Custom Declare and documents preparation.And we also could introduce you some local forwarder agent to show some help.
Q: How to guarantee the after-sale?
A: We build up a professional After-Sale Team to feedback to you. Please follow the guide lines:
1. Please take detailed photos of ingredients with well packages.
2. Please calculate the quantity of defect ingredients with picture listed.
3. Please send us the complaint sheet with more clearer details by e-mail. The After-Sale Team will do research and submit the investigation report with our OA&QC Department. Solution for reference:
1. If the package damage problem, make sure ingredients are fine. We will provide new package for free.
2. If ingredients have minor defects, we will try our best to give you discount and compensation.
3. If there is critical problem.We would do inspection and provide replacement after got your approval.
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