Hebei Nengqian Chemical Import and Export Co., LTD
Assessed Supplier Enterprise Certification
- Assessed
Supplier - 4th
years
Assessed Supplier Enterprise Certification
Product Certification&
Enterprise Certification
Country: 
China (Mainland)
Business Type:Trading Company
Tel: +86 13910575315
Tel: +86 15632961819
Tel: +86 18233902561
Tel: +86 15717685612
Tel: +86 16630923639
Tel: +86 18732968538
Tel: +86 18833033983
Tel: +86 19831957301
Mobile: +86 19831957301
Tel: +86 13910575315
Fax: 0310-8698866
URL: http://hbnq1.com/
Province/state: Hebei
City: Handan
Street: Congtai District, La Defense North
MaxCard:
Ms.AnnaCAS NO.99-05-8
Industrial Grade(1-10)Metric TonIndustrial Grade(10-101)Metric TonIndustrial Grade(100-300)Metric Ton
With our good experience, we offer detailed technical support and advice to assist customers. We communicate closely with customers to establish their quality requirements.
Consistent Quality
Our plant has strict quality control in each manufacturing process. Guaranteed.
Meanwhile all the materials are tested before each shipment in our laboratory to double confirm the quality.
Most competitive pricing
Our company is committed to the production and development of titanium dioxide, we always offer the most competitive pricing to customers to help lower their cost in application.
Shortest delivery time
90% of orders are shipped within 7-10 days after receipt of the prepayment or workable L/C.
Respond in 24 hours to inquiry, feedback or other requirements
Our experienced staff is dedicated to answer all of your inquires, feedback or other requirements in 24 hours.
We welcome you to contact us for more information and look forward to working with yo
Product introduction:
| Density | 1,51 g/cm3 |
| Melting Point | 178-180°C(lit.) |
| Boling Point | 251.96°C (rough estimate) |
| Flash Point | 150°C |
| Water Solubility | 5.9 g/L (15 ºC) |
| Solubility | Soluble in acetone, soluble in boiling water, hot ethanol, hot chloroform, slightly soluble in cold water, cold ethanol and cold chloroform, insoluble in benzene and gasoline. It's irritating. Solubility: 5.9g/l water (15°C) ,3g/100g ethanol, slightly soluble in ether |
| Vapor Presure | 1.41E-05mmHg at 25°C |
| Appearance | White crystal |
| Color | White-brownish to beige-brown |
| Odor | Odorless |
| Merck | 14,421 |
| BRN | 471603 |
| pKa | 4.78(at 25℃) |
| Storage Condition | Keep in dark place,Inert atmosphere,Room temperature |
| Sensitive | Sensitive to light |
| Refractive Index | 1.5323 (estimate) |
| MDL | MFCD00007795 |
| Physical and Chemical Properties | White or yellowish crystals. Melting point 174 ℃, relative density 1.5105(20/4 ℃). Soluble in acetone, soluble in boiling water, hot alcohol, hot chloroform and ether, slightly soluble in cold water, cold alcohol and cold chloroform, insoluble in benzene and gasoline. Sweet. Can sublimate. |
| Use | Used as photographic and pharmaceutical intermediates |
| Introduction | M-aminobenzoic acid is mainly used in the synthesis of pharmaceutical intermediates, white or light yellow crystals. M-aminobenzoic acid is soluble in acetone, soluble in boiling water, hot alcohol, hot chloroform and ether, slightly soluble in cold water, cold alcohol and cold chloroform, insoluble in benzene and gasoline, sweet, sublimation. |
| synthesis method | in the reaction vessel was added 3mol of cuprous chloride, 4mol of toluene solution, 5mol of M-nitrobenzoic acid solution, raise the solution temperature to 60 ℃, control the stirring speed 110rpm, maintain 90min, adjust the solution pH to 9 with 10% sodium hydroxide solution, lower the solution temperature to 5 ℃, precipitate crystals, add 6L mass fraction of 30% ethanol solution for washing, mass fraction of 40% sodium chloride solution for washing, mass fraction of 50% nitromethane solution for washing, mass fraction of 60% ethylenediamine solution for washing, anhydrous sodium sulfate dehydrating agent for dehydration, 357.57g of M-aminobenzoic acid was obtained with a yield of 87%. |
| uses | pharmaceutical and dye intermediates. Used in the manufacture of azo dyes, pharmaceutical ethyl iodide acid and bile acid, reagent. used as photographic and pharmaceutical intermediates |
| production method | 1. Catalytic hydrogenation of M-nitrobenzoic acid M-nitrobenzoic acid dissolved in water, heated to below 70 ℃, with 10% liquid alkali to adjust the pH value, the pH value is greater than 7. 2% activated carbon was added, decolorized for 20-30min, and filtered. The filtrate was adjusted to pH8-8.5 with 10% liquid base. Add Palladium carbon to the filtrate (I. E., 2% palladium chloride solution is slowly added to the pan of water and activated carbon, stirring while adding, and then hydrogen gas is added), and heat to 40-45 ℃, hydrogen was passed until hydrogen was no longer absorbed. Palladium carbon was filtered off to obtain sodium M-aminobenzoate solution. The yield was 95%. Nickel can also be used as a catalyst, the test results, the yield is 99.8%; In 88% mL beaker, add 100% M-nitrobenzoic acid (according to 82.3 22% g), of water, with sodium hydroxide pH = 6-7, after the solution was completely dissolved, 17g of Raney nickel was added, and the liquid was pumped into the swing autoclave under stirring, which was replaced by hydrogen and nitrogen two times respectively, and then charged to 3.92MPa, under the pressure of 2.94-3.92MPa and the temperature of 130-140 ℃, the reaction time is about 5h, and the hydrogen pressure does not decrease to the end point. The final product was obtained by filtration and drying. Iron powder reduction method in the reaction tank to add water, hydrochloric acid, sodium chloride, heated to 80. Add iron powder, 95 ℃ for 30min, M-nitrobenzoic acid was added in portions, maintained at 100 ° C. For 1H, cooled to 80 ° C., and neutralized to pH above 9 with sodium carbonate. Pressure filtration was carried out at 50 ° C., and the mud was washed with water to give a light brown reducing liquid. Using hydrochloric acid to adjust the pH value, or using the method of salting out to precipitate M-nitrobenzoic acid, filtered and dried to obtain the finished product. The yield was 90%. |
Our company specializes in processing and selling chemical raw materials, chemical products, pharmaceutical intermediates, veterinary medicine intermediates, dye intermediates, pigments, cosmetics raw materials and chemical reagents,
Our company has a number of sales team, service and information feedback vertical integration of a sound marketing network, products are sold throughout the country and exported to South Asia, Europe, America, Africa and other more than 20 countries and regions.
Companies adhering to the "pursuit of quality, innovation and development" business philosophy, to serve as a foundation, for the survival by the quality, seek development by science and technology, adhere to quilty comes first,fair price,good sense of customer service and responsibility. in the future hebei Nengqian import and export trade Co.,Ltd will always hold "integrity, innovation" business philosophy, to achieve honesty management, on the way of specialization, internationalization, Keep moving!
Our advantages:
1, High quality with competitive price:
1) Standard:BP/USP/EP/Enterprise standard
2) All Purity≥99%
3) We are manufacturer and can provide high quality products with factory price.
2, Fast and safe delivery
1) Parcel can be sent out in 24 hours after payment.Tracking number available
2) Secure and discreet shipment.Various transportation methods for your choice.
3) Customs pass rate ≥99%
4) We have our own agent/remailer/distributor who can help us ship our products very fast and safe,
and we have stock in there for transferring.
Product Packaging：
1) 1kg/bag (1kg net weight, 1.1kg gross weight, packed in an aluminum foil bag)
2) 25kg/drum (25kg net weight, 28kg gross weight; Packed in a cardboard-drum with two plastic-bags inside; Drum Size: 510mm high, 360mm diameter)
Storage：
Stored in a cool and dry well-closed container. Keep away from moisture and strong light/heat.
Delivery：
Usually within3-5 working days after full payment.
transport：
EMS,DHL, TNT, UPS ,FEDEX, BY AIR, BY SEA
DHL Express, FedEx and EMS for quantity less than 50KG, usually called as DDU service;
Sea shipping for quantity over 500KG; And air shipping is available for 50KG above;
For high value products, please select air shipping and DHL express for safe;
Our Service:
1. Fast Delivery: We can delivery within 24 hours upon receipt of your payment.
2. Quality can be promised. Hot sell to Worldwide.
3. Payment Terms: T/T,, t/t
4. Free Sample available at any time.
5. Tracking your order at any time. Inform your order's further new situation at any time.
6. Package: Professional packing with professional materials.
FAQ:
1.Are you a trade company or factory
We are a factory with our own trading company.
2.How do you control the quality
Our factory is equipped with professional technicians to control quality, out inspectors take sample for testing every 2 hours to ensure the quality of our production. We also accept BV, SGS or any other Third-party inspection.
3.How long is lead time
We deliver goods within 3 days for small order, 7-10 days for bulk order.
4. Where is your factory located How can I visit the factory
Our factory located in HEBEI, China.
5.Can i get some samples
Yes, we can supply free sample, but the shipping cost be paid by our customers.
6.How to start orders or make payments
Proforma invoice will be sent first after confirmation of order, enclosed our bank information.Payment by T/T,
7. How to confirm the Product Quality before placing orders
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.
8. How long is lead time
We deliver goods within 3 days for small order, 7-10 days for bulk order.
9. How do you treat quality complaint
First of all, our quality control will reduce the quality problem to near zero. If there is a realquality problem caused by us, we will send you free goods for replacement or refund your loss.