Copper Sulfide

1. Product description:

Copper sulfide indigo blue, black monoclinic or hexagonal crystal system, with metallic luster, chemical formula CuS, copper sulfide exists in the form of indigo ore in nature. From the relative density of 4.6, it is stable in dry air, and is gradually oxidized to copper sulfate in humid air, which is decomposed when heated to 220°C. Almost insoluble in water or ethanol, with a very small solubility product (8.0×10-37), soluble in hot dilute nitric acid, hot concentrated hydrochloric acid or concentrated sulfuric acid to generate the corresponding acid divalent copper salt; easily soluble in hot potassium cyanide In KCN or sodium cyanide CaCN solution, copper tetracyanide (I) complex ion [Cu(CN)4] 3-(potassium tetracyanide copper (II) acid) is formed. In the production of Chemicalbook and analytical chemistry, the insoluble copper sulfide can be used to separate the metal ions in the solution. For example, in the mixed solution of Ni2+-Cu2+, Zn2+-Cu2+, adjust the solution to slightly acidic first, and then pass the hydrogen sulfide gas , A black CuS precipitate is produced, and Cu2+ in the solution is removed to achieve the purpose of separation. In the laboratory, hydrogen sulfide is added to the slightly acidic copper sulfate solution or ammonium sulfide is added to the copper sulfate solution, and the precipitated precipitate is filtered, washed, and dried to obtain the finished copper sulfide. It is often used in the extraction of copper, the preparation of copper compounds, and the preparation of mixed catalysts, nigrosine dye developers and ship bottom protective coatings.

2. Company introduction:

Shenyu Energy(Shandong) Development Co., Ltd is Located in the beautiful spring city, Ji'nan Shandong, is a new enterprise integrating production, sales and service.Our products mainly include organic chemicals, inorganic chemicals, food additives, pharmaceutical intermediates, daily chemicals and other chemical raw materials. The company was first established in 2006, and has 12 years experience in domestic trade, and has established stable cooperative relations with many well-known factories in China. In 2013 , we opened up overseas markets and formally established the foreign trade department. The total annual sales amount reached 50 million dollars, international market accounts for 30 million. There are more than 200 employees, 10 technicians, 20 salesmen, more than 100 after sales and other staff. We have professional technical and sales who can solve the doubt for you. the company has served hundreds of enterprises in large and small scale use the core concept of "the customer first, the good faith is supre" . Because of the reliable quality, reasonable price and good quality, we have got a good reputation in the chemical industry. The company will be in accordance with the national "The Belt and Road" policy, committed to be chemical industry leader, contribute to the development of the world economy. Make “shenyu”as a world brand. We will continue to provide you with top-class products and services, look forward to cooperating with you.

3.Our advantages:

1. Customer OEM service is acceptable.

2. Small order is acceptable.

3. Sample is available with freight collect.

4. Professional sales team with rich experience both in product and business.

5. Third-party inspection is accepted.

6. 7*24 hours working time and quick response, your request will be processed by our professional staff in different shift periods.

7. All documents will be ready upon your requirement.

8. Factory Price and high quality can be guaranteed.

9. After-sales service.

10. Welcome to visit our company.

11. Have cooperated with a lot of importers from world wide for more than 10 years.

12. Fast and safety delivery by professional freight forwarder.

4.FAQ:

Q1: Are you trading company or manufacturer?

A1: We are chemical factory in China. So we can provide wholesale price.

Q2: How can I get the samples?

A2: We can provide you free sample for our existing products, the lead time is about 1-2 days.You just need to pay the sample delivery cost.

Q3: Can you provide relevant documents?

A3: Of course. We can provide Commercial Invoice, Packing List, Bill of loading, COA,Health certificate and Origin certificate. If your markets have any special requirements,just let us know.

Q4: Do you accept third party inspection?

A4: Yes.we do.

Q5: If the inspection result can not meet the agreement between the two sides,can you bear all the losses caused by this?

A5: Yes, we can. We guarantee that the samples provided will meet the needs of our clients and we will bear the risk of default.

Q6: What types of containers are used to package products from your company?

A6: It is generally 20'FCL or according to customers’ requirement.

Q7: How long is your delivery time?

A7: Generally it is with 7 days if the goods are in stock. According to quantity your required,the delivery time may slightly change.

Q8: What’s your terms of payment?

A8: We can accept various payment methods, L/C, T/T, Paypal, Western Union etc.

Q9: Can your company accept the special requirements of your customers?

A9: Of course, we can.

Q10: What kind of products does your company still manufacture?

A10: We main deal chemicals, Pet products, Bicycle,Fishing Gear etc.

5.Contact us

Any interested in our products please contact us freely. All of your inquiry will be replied within 2 hours.

Email: shenyu03@zgshenyu.com

Whatsapp: +86 18615520869

Tel: +86-531-88940086