Keywords

• Rhodine(7CI)
• O-ACETYLSALICYLIC ACID
• Salicylic acid acetate (8CI)

Quick Details

• ProName: Acetylsalicylic acid 50-78-2
• CasNo: 50-78-2
• Molecular Formula: C9H8O4
• Appearance: White Crystalline Powder
• Application: Salicylic acid and acetic acid. Slight...
• DeliveryTime: 7-15 working days
• PackAge: Bag/compartments
• Port: tianjin
• ProductionCapacity: 200 Metric Ton/Month
• Purity: 99%
• Storage: Dry, away from light, sealed.
• Transportation: We will choose the mode of transportat...
• LimitNum: 1 Metric Ton
• color: White powder

Superiority

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

Details

Product introduction:

Exam

Authoritative Data Verified Data

clarity of the solution

take 0.50g of this product and dissolve 10ml of sodium carbonate test solution heated to about 45°C. The solution should be clear.

free salicylic acid

new system for clinical use. Take this product about O.lg, precision weighing, put in 10ml children's bottle, add 1% glacial acetic acid in the appropriate amount of fermentation solution, shake to dissolve, and dilute to the scale, shake, as a test solution; take about 10 mg of the salicylic acid reference product, weigh it accurately, put it in a 100ml measuring flask, add an appropriate amount of 1% glacial acetic acid in the fermentation broth to dissolve and dilute it to the scale, shake it well, and take 5ml, in a 50ml measuring flask, dilute to the mark with 1% glacial acetic acid in methanol and shake to a standard solution. Test according to high performance liquid chromatography (General 0512). Silica gel bonded with eighteen alkyl silane was used as the filler; Acetonitrile-tetrahydrofuran-glacial acetic acid-water (20:5:5:70) was used as the mobile phase; The detection wavelength was 303nm. The number of theoretical plates shall not be less than 5000 based on the salicylic acid peak. The separation degree of aspirin peak and salicylic acid peak shall meet the requirements, the chromatogram was recorded. If there is a chromatographic peak in the chromatogram of the test solution that is consistent with the retention time of the salicylic acid peak, the peak area shall be calculated according to the external standard method, and the peak area shall not exceed 0.1%.

easily carbonized

take 0.5g of this product, check according to law (General rule 0842), and control solution (take 0.25 of cobalt chloride solution for color comparison, 0.25 of potassium dichromate solution for color comparison, colorimetric copper sulfate solution 0.40, add water to make 5ml), not deeper.

Related substances

take this product about O.lg, put in a 10ml measuring flask, add an appropriate amount of 1% methanol solution of glacial acetic acid, shake to dissolve and dilute to the scale, shake well, as a test solution; Take 1ml for precision measurement, in a 200ml measuring flask, dilute to the scale with 1% glacial acetic acid in the fermentation broth, shake well, and use as a control solution; Take 1ml of the control solution precisely and put it in a 10ml measuring flask, dilute to the scale with 1% glacial acetic acid in methanol and shake well as a sensitivity solution. Test according to high performance liquid chromatography (General 0512). Silica gel bonded with eighteen alkyl silane as filler; Acetonitrile-tetrahydrofuran-glacial acetic acid-water (20:5:5:70) as mobile phase A, acetonitrile as mobile Phase B, the gradient elution was carried out as follows; The detection wavelength was 276nm. The retention time of the aspirin peak is about 8 minutes, and the separation of the aspirin peak and the salicylic acid peak should meet the requirements. The sample solution, the control solution, the sensitivity solution and the l0ul of the salicylic acid reference solution under the free salicylic acid check item were accurately measured and injected into the liquid chromatograph to record the chromatogram. If there are impurity peaks in the chromatogram of the test solution, the sum of other impurity peak areas except the salicylic acid peak shall not be greater than the main peak area of the control solution (0.5%). The chromatographic peaks in the chromatogram of the test solution which are smaller than the main peak area of the sensitivity solution are ignored.

loss on drying

take this product, put phosphorus pentoxide as desiccant dryer, under reduced pressure drying at 60°C to constant weight, weight loss should not exceed 0.5% (General 0831).

ignition residue

not more than 0.1% (General rule 0841).

Heavy metals

take l.Og of this product, add 23ml of ethanol to dissolve, add acetate buffer (pH 3.5)2mU to check according to law (General rule 0821 first method), containing heavy metals not more than 10 parts per million.

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.