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1,4-Benzenediol CAS 123-31-9

Molecular Formula: C6H6O2

Formula Weight: 110.11

ZSpharmac: 1,4-Benzenediol Supplier

Product Name: 1,4-Benzenediol
CAS No: 123-31-9
Purity: 99%

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Basic Info

Product Name:1,4-Benzenediol
Other Names:Hydroquinone
Place of Origin:Shandong, China
Brand Name:ZSpharmac
Type:Cosmetic Raw Materials
Appearance:White to Off-White Needle-Like Crystals or Crystalline Powder
EINECS No.:204-617-8
Storage:Store Below +30°C.
Provide:1,4-Benzenediol MSDS;
1,4-Benzenediol COA

What is 1,4-Benzenediol?

1,4-benzenediol, additionally referred to as hydroquinone, is a crucial chemical basic material. Over the last few years, residential demand for it has shown an expanding fad, and the usage area has actually broadened year by year. 1,4-benzenediol is extensively utilized as a crucial resources, intermediate as well as supporting representative for medicine, chemical, color and also rubber, etc. It is mostly used for developer, anthraquinone color, azo color, rubber antioxidant as well as monomer prevention Polymers, food stabilizers as well as repaint anti-oxidants, petroleum anticoagulants, artificial ammonia drivers, etc.

1,4-Benzenediol Property

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
pka10.35(at 20℃)
form Needle-Like Crystals or Crystalline Powder
color White to off-white
Water Solubility 70 g/L (20 ºC)


1,4-Benzenediol Uses

  1. 1,4-benzenediol is widely utilized as a vital resources, intermediate as well as supporting agent for medication, chemical, color and rubber, etc. It is mainly used for developer, anthraquinone color, azo color, rubber antioxidant and monomer inhibitor Polymers, food stabilizers and repaint antioxidants, petroleum anticoagulants, artificial ammonia catalysts, and so on 1,4-benzenediol is an intermediate of herbicides quizalofop, fluazifop, thiazoprop, oxaprop, haloxyfop, lactofen, as well as also a medication and also a color intermediate.
  2. 1,4-benzenediol is made use of as a photo designer. Hydroquinone as well as its alkylate are widely made use of as polymerization inhibitors added during monomer storage space as well as transportation, and also the typically made use of focus has to do with 200ppm. Hydroquinone is additionally used to prepare N, N’-diphenyl-p-phenylenediamine, which is an antioxidant and additionally anti-odor agent for rubber and fuel.
  3. 1,4-benzenediol ought to be used as a colorimetric method for the resolution of phosphorus, magnesium, niobium, copper, silicon and also arsenic. Polarographic as well as volumetric resolution of iridium. Decreasing agent for heteropolyacids, decreasing representative for copper and likewise gold. Assessment for phosphate, tungstate, nitrate, nitrite, selenium and likewise tellurium, and so on.

1,4-Benzenediol in The Field of Whitening

The name 1,4-Benzenediol may be unfamiliar to everyone. If you have a deeper understanding of whitening products and ingredients, you should have heard of “hydroquinone”. Hydroquinone is hydroquinone. The status of hydroquinone for whitening and blemishes is like VA for anti-aging. It is currently a proven gold standard.

Sounds awesome, right? Come and wipe your face with a catty, will it immediately transform into an egg shell! NO! Why do we seldom hear the name of hydroquinone when the ingredients are hot and nicotinamide and VC whitening products are flying all over the sky?

Simply because it’s poisonous.

Hydroquinone has a strong effect of inhibiting the formation of melanin, but it is also accompanied by serious side effects and irritation, and is not stable itself. Hydroquinone is cytotoxic, improper use will “kill” melanocytes, and also cause depigmentation, forming white spots like vitiligo, which is much more difficult to treat than whitening and light spots.

However, in Japan and the United States, the control of hydroquinone is slightly looser. As long as the content of hydroquinone in the United States does not exceed 2%, it can be used as an OTC (over-the-counter drug) or added to skin care products. In Japan, there is also a 4% concentration of whitening essence!

While brands have plenty of data to say it’s absolutely safe, there is technology to stabilize hydroquinone! However, I dare not sell it, and I will not recommend normal and healthy people to buy whitening essence containing hydroquinone on a daily basis! But, the wisdom of human beings is infinite, thanks to the development of science!

Although we can’t control hydroquinone yet, we have discovered a brother of hydroquinone – 1,4-Benzenediol, which can retain most of the “power” of hydroquinone, and at the same time, it is less stimulating, but it is still fierce and not conducive to consumers. “No brain” use.

Therefore, various derivatives of 1,4-Benzenediol have been developed, which are further optimized in terms of irritation and stability, in order to be more easily tolerated by most skins and can be used for a long time. The more common resorcinol Derivatives are: phenylethylresorcinol, 4-butylresorcinol, dimethoxytolyl-4-propylresorcinol, hexylresorcinol. Then today’s topic is officially here, what are these whitening essences with resorcinol derivatives as the main ingredients!

For example, hydroquinone is like A acid, because it has too many side effects and is not allowed to be added in skin care products! However, 1,4-Benzenediol derivatives are like A alcohol, which not only has the powerful effect of mother family, but also is safe and reliable, so for this kind of whitening essence, feel free to use it boldly!

1,4-Benzenediol Production Method

The Production Method has always been produced by the aniline method, and the current industrial production has also developed the catechol co-production method, the cumene method and the bisphenol A method. my country is still using the aniline method. 1. Aniline is oxidized to p-benzoquinone by manganese dioxide in sulfuric acid medium, and then reduced by iron powder to generate hydroquinone. After concentration, decolorization, crystallization and drying, the finished product is obtained. Industrial grade Production Method content ≥ 99%, photographic grade ≥ 99.5%. Raw material consumption quota: aniline 1250kg/t, sulfuric acid (93%) 5500kg/t, pyrolusite powder (containing manganese dioxide 60-65%) 5950kg/t, iron powder (containing Fe≥90%) 540kg/t. 2. Using nitrobenzene as raw material, it can be obtained by hydrogenation and heating.

About Products:
If you need 1,4-Benzenediol as a cosmetic raw material, please contact our service staff directly, we will provide you with high-quality products at the best price.
As an experienced 1,4-Benzenediol manufacturer and supplier, ZSpharmac will provide 1,4-Benzenediol raw materials to customers all over the world for a long time.
Over the years, the company has been adhering to the spirit of “integrity management, strict quality control, customer first”, and has won unanimous praise from domestic and foreign customers.

Company Profile and Corporate Culture

Company Profile:

ZhiShang Chemical is owned by ZhiShang Group is a professional new-type chemicals enterprise combined into research and development, production and sales .

The company’s competitive product is pharmaceutical raw materials and intermediates (especially carbohydrate derivatives Series), In recent years, the company has made a major breakthrough in food and feed additives, plant extraction, industrial chemicals industry .

The company insists on the spirit of “sincere management, strict quality control, customer as god” , get consistent high praise from customers at home and abroad.

Corporate Culture:

Help China Chemicals to benefit the happiness of human life
Become the most trusted chemical supplier in the world
Striver – oriented, enrich employees, customer first, deep service, seek development
Be prepared for danger in times of peace, forge ahead actively, unity and cooperation, and be brave to fight

About Us

The production base is located in Zhangqiu chemical industry park and Tai’an high-tech chemical industry park. laboratory and workshop in strict accordance with the GMP standard and the product fit national ISO9001 and ISO2000 standards.

“Zhishang” products are exported to Europe, North and South America, the Middle East, Asia Pacific and Africa area, so as to establish a long-term and stable cooperation relationship with customer in the world.

Company Info
  • Business Type: Manufacturer
  • Product Range: Cosmetic raw materials
  • Products/Service:Cosmetic raw materials (flavors and fragrances,antioxidant products, moisturizing and hydrating, whitening agents, cosmetic additives)
  • Total Employees: 51~100
  • Capital (Million US $): 10000000RMB
  • Year Established: 2016
Production Capacity
  • No. of Production Lines : 8
  • No. of QC Staff : 5 -10 People
  • OEM Services Provided : yes
  • Factory Size (Sq.meters) : 3,000-5,000 square meters
  • Certificate: ISO9001 , CE , GMP , API , MSDS
  • Factory Location : Diao Town Industry Park, Zhangqiu City, Jinan City, Shandong Province, China.


Pre-Sales Service

* Prompt reply and 24 hours online, professional team to provide best price and high quality product.

* Sample testing support.

* Every batch of products will be tested to ensureits quality.

*The packing also can be according the customers` requirment.

*Any inquiries will be replied within 24 hours.

*we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate. If your markets have any special requirements, let us know.


After-Sales Service

*The fact of logistics information monitoring.

* Any questions about the product can be consulted at any time.

*Product has any problem can return.


Do you accept sample order?

We will make samples before mass production, and after sample approved, we’ll begin mass production. Doing 100% inspection during production, then do random inspection before packing.



You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.

What’s your MOQ?

Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.

Do you supply product report?

Yes. We’ll give you product analysis report before shipping.

  Is there a discount?

Different quantity has different discount.


1. ≤50kg, Express delivery recommended, usually called as DDU service;

2. ≤500kg, Air shipping recommended, usually called as FOB, CFR, or CIF service;

3. >500kg, sea shipping recommended, usually called as FOB, CFR, or CIF service;

4. For high value products, please select air shipping and express delivery for safe.

Get 1,4-Benzenediol Quotation