Details:

Our advantage:

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.

optical rotation

take this product, precision weighing, add water-methanol solution (15:85) to dissolve and quantitatively dilute to make a solution containing about 20mg per lml, and determine according to law (General 0621), the optical rotation is from 0.05 ° to +0.05 °.

acidity

take an appropriate amount of this product, accurately weigh it, add an appropriate amount of water, ultrasonic to dissolve and quantitatively dilute it into a solution containing about 10 mg per lml, let it cool, and determine it according to law (General rule 0631), the pH should be between 4.5 and 6.5.

clarity and color of solution

take the right amount of this product, precision weighing, add water-methanol solution (15:85) to dissolve and dilute to make a solution containing about 20mg per lml, the solution should be clear and colorless; if it is turbid, it should not be more concentrated compared with No. 1 turbidity standard solution (General rule 0902 first method); If it is colored, it should not be deeper compared with yellow No. 1 Standard Colorimetric solution (General rule 0901 first method).

Related substances

take about 140mg of this product, put it in a 25ml measuring flask, add the mobile phase to dissolve and dilute to the scale, shake well, as a test solution; Take 2ml for precision measurement, put it in a 100ml measuring flask, dilute to scale with mobile phase, shake, take 5ml with precision, put it in 100ml measuring flask, dilute to scale with mobile phase, shake, use as control solution; Take 5ml with precision, set in a 10ml measuring flask, dilute to the scale with the mobile phase, and shake to serve as a sensitivity solution. Take fluoxetine hydrochloride about 22mg, put it in a stopper tube, add 0.5mol/L sulfuric acid solution 10ml, water bath at 85°C for 3 hours, let it cool, this solution contains impurity I and impurity II; take 0.4ml of this solution, put it in a 25ml measuring flask, and take fluoxetine hydrochloride about 28mg, impurity ID control and impurity IV control about 1 mg respectively, put it in the above 25ml measuring flask, dissolve and dilute to the scale with the mobile phase as the system suitability solution. The detection wavelength was 215nm according to the chromatographic conditions under the content measurement. Take 10ul of the applicable solution of the system, inject human liquid chromatograph, adjust the proportion of mobile phase, so that the retention time of the main component peak is 10~18 minutes, the peak order is impurity I, impurity III, impurity IV, fluoxetine and impurity II (relative retention time is about 0.23,0.26,0.94,1.0 and 3.3, respectively), except that the separation degree between impurity I peak and impurity ID peak should be greater than 1.0, the degree of separation between other peaks should meet the requirements. Take the sensitivity of l0ul injection solution into the liquid chromatograph, the signal to noise ratio of the main component peak height should be greater than 10. Take 10 u1 of the test solution and the control solution respectively, inject the human liquid chromatograph, record the chromatogram to 4 times of the retention time of the main component peak. If there are chromatographic peaks in the chromatogram of the test solution that are consistent with the retention time of impurity I, impurity III and impurity IV, the Peak area of impurity I and impurity III shall not be greater than 2.5 times (0.25%) of the main peak area of the control solution, and the peak area of impurity IV shall not be greater than 1.5 times (0.15%) of the main peak area of the control solution; other single impurity peak area shall not be greater than the main peak area of the control solution (0.1%), and the sum of each impurity peak area shall not be greater than 5 times (0.5%) of the main peak area of the control solution. The chromatographic peaks in the chromatogram of the test solution which are smaller than the main peak area of the sensitivity solution are ignored (0.05%).

residual solvent

take about 0.1kg of this product, precision weighing, top empty bottle, Precision Add 2ml of N ,N-dimethylformamide, shake to dissolve, seal, as a test solution; another precision weighing methanol, acetonitrile, n-hexane, ethyl acetate and toluene each appropriate amount, plus IV,IV-dimethylformamide dissolved and diluted to make each lml containing about 150ug of methanol, acetonitrile 20.5ug, respectively, the mixed solution of n-hexane 14.5ug, ethyl acetate 250ug and toluene 44.5ug was accurately measured and 2ml was placed in the headspace bottle, sealed and used as the reference solution. According to the determination method of residual solvent (General Principle 0861 second method), the capillary column with 6% cyanopropyl phenyl-94% dimethyl polysiloxane (or similar polar) as the stationary liquid is the column; The initial temperature is 40°C, maintain for 7 minutes, at a rate of 10°C per minute to 110°C, and then at a rate of 20°C per minute to 200°C, maintain for 10 minutes; The temperature of the sample inlet is 200°C; the detector temperature was 250°C; The headspace bottle equilibration temperature was 90°C and the equilibration time was 40 minutes. Take the reference solution into the headspace, and the separation degree between the peaks of each component shall meet the requirements. Then the sample solution and the reference solution were injected with headspace, and the chromatogram was recorded. According to the external standard method, the residual amount of methanol, acetonitrile, n-hexane, ethyl acetate and toluene shall be in accordance with the regulations.

loss on drying

take this product, dry to constant weight at 105°C, weight loss shall not exceed 0.5% (General rule 0831).

ignition residue

take 1.0g of this product, place it in a uranium crucible, and inspect it according to law (General rule 0841). The remaining residue shall not exceed 0.1%.

Heavy metals

The residue left under the item of ignition residue shall not contain more than 20 parts per million of heavy metal after examination by law (General rule 0821, Law II).

 

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.