China Professional Factory YI Hang Supply 99% Off-white Powder Gallic acid CAS No.:149-91-7

Essential information

Molecular formula: C7H6O5

Molecular weight: 170.12

Physical property

Melting point: 251 °C (dec.) (lit.)

Boiling point: 259.73°C (rough estimate)

Density: 1.694

Vapour pressure: 0Pa at 25℃

Refractive index：1.5690 (estimate)

Storage condition: 2-8°C

Solubility: Slightly soluble in methanol, slightly soluble in water when heated

Pka: 4.41(at 25℃)

PH: 3.75(1 mM solution);3.22(10 mM solution);2.71(100 mM solution)

EINECS: 205-749-9

Chemical property

White or light brown acicular crystal or powder. Melting point 235-240℃ (decomposition). When heated to 100-120℃, the crystal water is lost, and when heated to 200℃ or more, the Chemicalbook loses carbon dioxide and generates pyrogallic acid (that is, phloroglucinol). Soluble in hot water, ethyl ether, ethanol, acetone and glycerol, insoluble in cold water, insoluble in benzene and chloroform.

Purpose

Gallic acid has many uses in pharmaceuticals, inks, dyes, food, light industry, and organic synthesis. Gallic acid and ferric ion form blue-black precipitate, which is the raw material of blue-black ink; Chemicalbook is also used in industry for leather; It can also be used as photographic developer. Propyl gallate is an antioxidant and can be used in edible oils to prevent rancid. In medicine, gallic acid is a hemostatic astringent and a mild local irritant. It has antibacterial effect and can treat dysentery. It has the effect of astringent, hemostasis and diarrhea. It can be used as a preservative. It can prepare pyrogallic acid, medicine, ink, medium dye and explosion-proof agent. It is also used as a developer and an analytical reagent for the detection of free inorganic acids, dihydroxyacetone, alkaloids and metals. It can be used as a preservative, and can prepare media dyes and explosion-proof agents. It is mainly used as a color modifier for blue and black ink. It is used in the pharmaceutical industry for the preparation of sulfonamide synergist TMP and as a compound of sulfonamide drugs such as SMZ and SD-B. Food industry for the preparation of the preservative gallic propyl ester. The defense industry is used to prepare explosion-proof agents. In addition, it can also be used for the production of mordant dyes and as a developer. Used as a depolarizer in electrochemical analysis; For reducing phosphomolybdate; Used for testing antimony, barium, bismuth, calcium, cerium and copper, etc. Used for the determination of phosphorus, nitrite, silver, thorium and titanium.

Packaging Details: 25 kg/bag or as your requirement.
Port: Tianjin/ Qingdao/ Shanghai, etc.
We can ship the samples by air.
Lead Time: Within 2-3days after receiving the advance payment or original L/C.

XI'AN YI HANG CHEMICAL CO.,LTD was founded in 2002, located in xian City, shannxi, China. We are the high-tech chemical enterprise which specialized in researching, manufacturing and trading for chemical raw materials ,our products widely used in paints, textile, rubber, leather, plastic and so on.

With many years development and operation,we have become the group company for chemical production,we have the owned factory for produce stable quality products with high performance, and the advanced lab to ensure the best quality of each batch products.

We have our strictly quality control in our production, and we have passed ISO9001:2015 Quality Management System Certification and ISO14001 Environment Management System Certification.

Our main products includes Titanium Dioxide, Lithopone, Iron Oxide series, Chrome Oxide Green, Zinc Oxide, Carbon Black, STPP, SHMP, Oxalic Acid, DOP, SLES, and so on.

Q1: Are you manufacturer or trading company?

A1:Manufacturer.

Q2: Can I get some sample?
A2: Yes, usually 10-25g sample for free.

Q3: Is there a discount?
A3: Of course, welcome to contact us. Price would be different based on different quantity. For bulk
quantity, we will have discount for you.

Q4: How long for production and delivery?
A4: Most products we have in stock, sent time:Within 1-3 business days after received payment. Customized products further discussed.

Q5: Do you accept ODM or OEM service?
A5: Yes,we accept ODM and OEM services, ranges: Soft gel, Capsule, Tablet, Sachet, Granule,Private Label service, etc. Please contact us to design your own brand product.

Q6: How to deliver the goods?
A6: ≤50kg ship by FedEx or DHL etc, ≥50kg ship by Air, ≥100kg can be shipped by Sea. If you have special request on delivery, please contact us.

Q7: How to start orders or make payments?
A7:There are two ways for you to confirm order:
1. Proforma invoice with our company bank details will be sent to you once the order confirmed by Email. Pls arrange payment by  TT. Goods will be sent after received payment within 1-3 business days.
2. Trade assurance order will be drafted for you through ALIBABA. Pls confirm and pay through Alibaba. Goods will be sent after  received payment within 1-3 business days.