| Customization: | Available |
|---|---|
| CAS No.: | 548-26-5 |
| Formula: | C20h8br4o5 |
|
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Product information
CAS No.:548-26-5
Other Names:eosinesaltfree
MF:C20H8Br4O5
Place of Origin:Shanghai China
Type:Agrochemical Intermediates, Dyestuff Intermediates, Flavor & Fragrance Intermediates, Pharmaceutical Intermediates, Syntheses Material Intermediates
Purity:99.9%min
Brand Name: Lonwinchem
Model Number:DAC170112
Specification
| Item | Standard | Test Results | |
|
Identification |
A.H-NMR:Comply with the structure |
Complies |
|
|
B.LC-MS:Comply with the structure |
Complies |
||
|
C.The IR spectrum of sample should be identical with that of reference standard; |
Complies |
||
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D.HPLC-ESI-MS The retention time of the major peak in the chromatogram of the Assay preparation corresponds to that in the chromatogram of the Standard preparation, as obtained in the Assay. |
Complies |
||
|
Crystallinity |
meets the requirements. |
Complies |
|
|
Loss on drying |
≤2.0% |
0.19% |
|
|
Heavy metals |
≤10 ppm |
<10ppm |
|
|
Water |
≤1.0% |
0.1% |
|
|
Sulphated ash |
≤0.5%, determined on 1.0 g. |
0.009% |
|
|
Related substances |
Unspecified impurities: for each impurity |
≤0.10% |
<0.10% |
|
Total Impurity |
≤0.5% |
0.18% |
|
|
Purity |
≥99.0% |
99.7% |
|
|
Assay |
99.0%~101.0% (anhydrous substance). |
99.8% |
|
|
Microbiological Analysis |
|||
|
Total plate count |
≤1000cfu/g |
Complies |
|
|
Yeast and Moulds |
≤100cfu/g |
Complies |
|
|
E. Coli. |
Absent |
Negative |
|
|
Salmonella |
Absent |
Negative |
|
|
S.aureus |
Absent |
Negative |
|
|
Storage |
Preserve in well-closed, light-resistant and airtight containers. |
Complies |
|
Product picture
Applications
Dyeing silk, cotton, and wool; red writing ink; cosmetic products; biological stain; coloring motor fuel.
Packing
25kg/carton or as customer's requirement. 500kgs/pallet.
Quantity: 10mts/20'fcl with pallet or 12mts/20'fcl without pallet.
Cautions: Avoid direct sunlight, moisture, high temperature, substances with sulfur or halogen such as some stabilizers, flame retardants and pesticides. Testing required before use.
Lonwin Chemical Industry Group. is a company committing to contract synthesis and production of photoinitiators, fluorocarbon surfactants, indicators, intermediates and APIs.Our company has ISO and REACH international certification, in Jiangsu, Anhui and other places with decades of cooperation of OEM processing plants, to provide a more solid support for the customized production service of special chemicals.
Now, our products are well sold in North America, Europe, Japan, South Korea and the Middle East, and customers are highly satisfied with our products and service!
To achieve sustainable and steady development, we establish closely cooperative relationships with famous universities and institutions of China. We regularly exchange information with them and make cooperation on the R&D of new technologies.
Sticking to the business philosophy of "quality first, credit first, service first, creativity first", we are doing our best to meet demands of customers all around the world. We sincerely welcome your visit and business, and look forward to cooperating with you for expanding international market together!
Q1: Have your Product Quality been Approved by Third Party Lab
A: Yes, All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China. So you will be assured with Good Quality if you choose us.
Q2: How do you treat quality complaint
A: First of all, our QC department will do strict examination of our export products by HPLC, UV, GC,TLC and so on in order to reduce the quality problem to near zero. If there is a real quality problem ,caused by us, we will send you free goods for replacement or refund your loss.
Q3: How to cooperate with us
A: You can contact us for cooperation through the website contact information, or contact with the salesmen in our company. We will connect you about the specific detail via email.
Q4: Do you Accept Sample Order
A: Yes, we accept small order from 10g, 100g and 1kg for your evaluation quality of our goods.
Q5: Is there any discount
A: Yes, for larger quantity, we always support with better price.
Q6: How long does it take to the goods arrived
A: It is Depending on your location.
For small order, please expect 5-7 days by DHL,UPS,TNT, FEDEX, EMS.
For mass order, please allow 5-8 days by Air, 20-35 days by Sea.
Q7: Do you have any reshipment policy
A: We have good after-sale service and re-shipment policy if the parcel lose.
Our long association with our clients has brought great benefits.
We always take the upmost care in the packaging of our products .
Our clients will confirm this as even they struggle to find them without help at times.
But in spite of our best efforts it is still possible will seize a small number of packages.
In this circumstance we promise reship free to establish long term relationship.
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