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 18732968538
Mobile: +86 18732968538
Tel: +86 18732968538
Fax: 4001020630
URL: https://www.nengqianchemical.com/
Province/state: Hebei
City: Handan
Street: No.1722, Block C, Yangguang Xinzhuo Plaza, 256 Renmin West Road, Fuxing District, Handan City, Hebei Province
MaxCard:
Ms.AnnaCAS NO.59-49-4
Pharmaceutical grade(1-50)KilogramPharmaceutical grade(51-99)Kilogram
Our Advantage
Rich Experience
Our products are sold all over Europe,North&South America, Sino-East, Asia and pacific area as well as Africa,we establish long term.
Quality service
Company cooperates with research institutes. We strictly control the process of raw materials up to finished product.
24 hour service
Quick and clear response to customers questions. Warm after sale service, we will help to solve the problems in your usage.
High quality
Dedicated to serving customers first, we provide reasonable prices, high quality products.
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.
| Molar Mass | 135.12 |
| Density | 1.3124 (rough estimate) |
| Melting Point | 137-139°C(lit.) |
| Boling Point | 248.79°C (rough estimate) |
| Flash Point | 160 °C |
| Water Solubility | soluble in hot water |
| Solubility | DMSO (Slightly), Methanol (Slightly) |
| Vapor Presure | 0.00069mmHg at 25°C |
| Appearance | Light yellow solid |
| Color | Light beige to brown-gray |
| BRN | 119481 |
| pKa | 9.50±0.70(Predicted) |
| Storage Condition | Sealed in dry,Room Temperature |
| Refractive Index | 1.5800 (estimate) |
| MDL | MFCD00005716 |
| Physical and Chemical Properties | Melting point 137-141°C Flash point 160°C Water solubility soluble in hot water |
| Use | 2-Benzoxazolone is an intermediate of the insecticide phthion and the herbicide oxazolaoprine. |
| Introduction | 2-benzoazolinone, also known as benzoxazolone (Benzoxazolinone), is a light yellow solid in appearance. The chemical properties of 2-benzoxazolinone are relatively active, such as the hydroxymethylation reaction of atomic energy and formaldehyde on the 3-position hydrogen in its molecular structure, the hydrogen on the 6-position of the benzene ring is easily substituted by chlorine, in the strong alkaline medium, the ring opening is easy to generate 2-hydroxyphenyl amino acid and the like. |
| Application | benzoxazolone has important applications in pesticide, medicine and other fields. Benzoxazolone is an important intermediate in pesticides such as oxazolium and oxazolyl oxazolyl oxazolyl oxazolyl oxazolyl oxazolyl oxazolyl oxazolone is an effective and low-toxic herbicide, and also an important intermediate in pesticides such as, in medicine it can be used for a variety of analgesics, the production of hypnotics and antipyretics. |
| preparation | in a glove box, O-hydroxyaniline (1mmol) and CsF(2mol) were added sequentially to a 10ml Schlenk bottle and diglyme(3ml), replace the air in it with CO2; Attach the Schlenk bottle with a CO2 balloon, and inject PMHS(4.5mmol) into the reaction bottle with a syringe, the mixture was stirred in an oil bath at 100 °c for 20 hours. After the end of the reaction, cool to room temperature, and then poured into 30mL H2O, immediately get a lot of precipitation, and then Suction filtration to obtain a large number of solid powder, with n-hexane (3 × 5ml) the solid powder was washed to remove unreacted starting material and the solid powder was then washed with ethyl acetate (3 x 10ml). The ethyl acetate layer was collected, dried over anhydrous magnesium sulfate, and then distilled under vacuum to give the pure product with an isolated yield of 78%. |
| Use | 2-benzoxazolone is an intermediate of the insecticide photopathion and the herbicide oxazolium. used in the production of dyes and synthetic intermediates |
| production method | the preparation method is to add O-aminophenol, urea and solvent chlorobenzene in the reactor, and protect with nitrogen, the reaction temperature was 50-132 ° C., and the reaction time was 6H. After the reaction was finished, the reaction was cooled with ice brine, crystallized, and filtered to obtain a finished product. O-aminophenol can also be used to react with phosgene in the solvent chlorobenzene, phosgene is rapidly introduced within 20~40 ℃, and then the temperature is raised to 100~130 ℃, and then phosgene is passed at a lower speed, after the completion of the reaction, phosgene was driven by nitrogen gas and post-treatment was performed, and 2-benzoxazolone was also obtained. |
| category | toxic substances |
| toxicity grade | poisoning |
| Acute toxicity | oral-rat LD50: 700 mg/kg; Oral-mouse LD50;554 mg/kg |
| flammability hazard characteristics | flammability; Toxic NOx smoke from combustion |
| storage and transportation characteristics | ventilation and low temperature drying |
| fire extinguishing agent | dry powder, foam, sand, carbon dioxide, water mist |
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.
Packing:
1. Inner double plastic bags----25kg/Fiber drum (35*35*45cm, GW: 28kg, NW: 25kg);
2. Inner double plastic bags----5kg/Aluminum foil bag (GW: 6.5kg, NW: 5kg).
3. Inner double plastic bags----1kg/Aluminum foil bag (GW: 1.5kg, NW: 1kg).
P.S.: we accept packaging customization.
Delivery:
1. Stock products are normally shipping within 3 working days.
2. For rush delivery, please contact our sales team for particular arrangement.
Shipping Details:
1. We ship goods via DHL, Fedex, UPS, TNT, China post, NL Post and other couriers, weight from 10g to 1000kg or even bulker.
2. Shipping details & shipping documents will be provided and sent by email.
3. We keep tracking the shippment until clients well received.
4. After years export shipping experience, with professional and experienced cooperated forwarders, we ensure that goods can be delivered in multiple ways safetly and efficiently.
About us
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,
We have compalete sales and service team , 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!
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.
You can send us your product specifications and requests,we will manufacture the products according to your requests.
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.