Protocatechuic acid CAS 99-50-3 supplier in china
Email: zoey@crovellbio.com
Whatsapp:+8619930503285
Wickr: zoey456
product details
| Product Name: | Protocatechuic acid |
| Synonyms: | Protocatechuic aci;Protocatechuic acid, 4-Carboxybenzene-1,2-diol, 4-Carboxycatechol;3,4- twohydroxybenzoic acid/protocatechuicacid;3,4-Dihydroxybenzoic acid >=97.0% (T);Carbohydroquinonic acid;Hypogallic acid;3,4-Dihydroxybenzoic acid Vetec(TM) reagent grade, 97%;3,4-Dihydroxybenzoic acid, >=99% |
| CAS: | 99-50-3 |
| MF: | C7H6O4 |
| MW: | 154.12 |
| EINECS: | 202-760-0 |
| Melting point | 197-200 °C (dec.) (lit.) |
| Boiling point | 237.46°C (rough estimate) |
| density | 1.54 |
| refractive index | 1.6400 (estimate) |
| FEMA | 4430 | 3,4-DIHYDROXYBENZOIC ACID |
| storage temp. | Store below +30°C. |
| solubility | 20g/l |
| pka | 4.48(at 25℃) |
| form | Fine Crystalline Powder |
| color | Beige to brown |
| PH | 3.78(1 mM solution);3.25(10 mM solution);2.74(100 mM solution) |
| Water Solubility | Soluble in hot alcohol and ether. Slightly soluble in water. |
| Sensitive | Air Sensitive |
| Merck | 14,7894 |
| BRN | 1448841 |
Specification
| ITEMS | SPECIFICATIONS | RESULTS |
| Appearance | White, crystalline powder or colorless crystals | Passes |
| Identification | Accord With BP2007 | Passes |
| Assay | 99.5%~101.0% | 99.97% |
| Melting point | 75°C~78°C | 77°C |
| Optical rotation | -0.05°~+0.05° | 0.00° |
| Heavy metals | ≤ 0.001% | <0.001% |
| Related substances |
| Impurity B | ≤ 0.3% | Passes |
| Any other impurity | ≤ 0.3% | Passes |
| Total of all impurities apart from impurity B | ≤ 0.7% | Passes |
| Impurity F | ≤ 0.1% | Not detected |
| Sulphated ash | ≤ 0.1% | 0.02% |
| Appearance of solution | Accord With BP2010 | Passes |
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Package and shipping
package: small order in sealed foil bag
big order in 25kg paper drum or carton box
shipping : Parcels will be no encounter customs issues such as Mexico ,Spain, UK, Netherlands, USA, Ireland, France, Germany, Brazil, Italy, and many European countries
WE HAVE SPECIAL SHIPPING WAY DDP delivery to your door ,safe and fast
by express like fedex ,TNT, DHL
by air to the aiport
by sea to the seaport
About our company
Hebei Crovell Biotech Co,.LTD. is the leading manufacturer for cosmetic materials in China.
Which located in Shijiazhuang, Hebei Province.
We are specialized in pharmaceutical intermediates, veterinary drug intermediates and dyes intermediates,
After ten years development, Hebei Crovell Biotech Co,.LTD. has become a Diversified development company, not only involves in chemicals, but also real estate, clothes, agricultural products and so on.
So far, Hebei Crovell Biotech Co,.LTD. has business in more than 35 countries, most big customers come from Europe and America, because among the suppliers in China, Crovell can always make the product quality best, some of the products from Crovell can reach the purity of 99.9+, such as carbomer. This is the important reason for customers who choosing Crovell.
In future, Hebei Crovell Biotech Co,.LTD. must become to a more important trade bridge for China and foreign countries especially in pharmaceutical industries
FAQ
Q: How to start orders or make payments?
A:You can send our your Purchase order(if your company has), or just send a simple confirmation by email or by Trade Manager, and
we will send you Proforma Invoice with our bank details for your confirmation, then you can make payment accordingly.
Q: How to confirm the Product Quality before placing orders?
A: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.
Q: What's your MOQ?
A:For the high value product, our MOQ starts from 1g and generally starts from 10gs. For other low price product, our MOQ starts
from 100g and 1kg.
Q: Is there a discount?
A: Yes, for larger quantity, we always support with better price.
Q:How do you treat quality complaint?
First of all, our quality control will reduce the quality problem to near zero. If there is a quality problem caused by us, we
will send you free goods for replacement or refund your loss.
Q:How to contact us ?
You can choose your interested products and send inquiry to us.You can dial our telephone directly, you will get our reply.
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