Gallic Acid

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Last update: 2019-08-21 08:34
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Product Instruction

◆ Gallic acid is a trihydroxybenzoic acid, a type of phenolic acid, a type of organic acid, also known as 3,4,5-trihydroxybenzoic acid, found in gallnuts, sumac, witch hazel, tea leaves, oak bark, and other plants.The chemical formula is C6H2(OH)3COOH. Gallic acid is found both free and as part of hydrolyzable tannins. The gallic acid groups are usually bonded to form dimers such as ellagic acid. Hydrolysable tannins break down on hydrolysisto give gallic acid and glucose or ellagic acid and glucose, known as gallotannins and ellagitannins respectively.

◆ Gallic acid monohydrate have anti-fungal and anti-viral properties. Gallic acid acts as a antioxidant and helps to protect our cells against oxidative damage. Gallic acid was found to show cytotoxicity against cancer cells, without harming healthy cells. Gallic acid is used as a remote astringent in cases of internal haemorrhage. 

◆Galla gallic acid is also used to treat albuminuria and diabetes. Some ointment to treat psoriasis and external haemorrhoids contain gallic acid. Gallic acid (also known as 3,4,5-trihydroxybenzoic acid) is a trihydroxybenzoic acid, a type of phenolic acid.

 

Specification of Gallic Acid (monohydrate) 99.0%

ITEMS

SPECIFICATIONS

METHOD/STANDARD

Characters

Powder

Organoleptic

Color

A white to beige powder

Organoleptic 

APHA

≤180

LY-T 1644-2005

Loss on drying

≤10.0%

LY-T 1644-2005

Solubility (Turbidity) 50mg/ml ETOH

Clear

LY-T 1644-2005

Residue on Ignition

≤0.1%

LY-T 1644-2005

Impurity of aromatic compounds

≤1.0%

HPLC

Identification:


By HPLC/TLC

Assay

≥99.5%

HPLC

Tannic aicd

≤1.0 ppm

LY-T 1644-2005

Sulfate

≤10 ppm

LY-T 1644-2005

Pb   

≤10pm

LY-T 1644-2005

As

≤3pm

LY-T 1644-2005

Product Application

◆ The gallic acid ester compound can be synthesized by using gallic acid as a raw material, and the alkyl ester of gallic acid can be classified into a lower ester (such as a methyl ester, an ethyl ester, a propyl ester, etc.) and a higher ester according to the number of alkyl carbon atoms ( Such as octyl ester, lauryl ester, octadecyl alcohol ester, etc.), these ester compounds are excellent food antioxidants.


◆ Gallic acid has various biological activities such as anti-inflammatory, anti-bacterial, anti-viral, anti-mutation, anti-oxidation and anti-free radical; in vitro against Staphylococcus aureus, sarococcus, alpha-typeococcus, Neisseria , Pseudomonas aeruginosa, Shigella flexneri, H. typhimurium Hd, Paratyphoid bacillus A and the like have an inhibitory effect, and the inhibitory concentration is 5 mg/ml. In vitro, it has a bacteriostatic effect on 17 kinds of fungi at a concentration of 3%, and has a certain inhibitory effect on influenza virus. It can treat dysentery. It has astringent, hemostasis and antidiarrheal effects.


◆ Galla extract gallic acid also has an anti-tumor effect, can inhibit the metastasis of mast cell tumor, thereby prolonging the survival period; it is also a relatively suitable candidate for trypanosome killing; it has a protective effect on the liver and can resist liver physiology and biochemistry induced by carbon tetrachloride. Transformation; vascular endothelium-dependent contraction and endothelium-dependent relaxation can be induced by inhibiting endothelial NO production. It must be pointed out that pharmaceutical and food gallic acid cannot use industrial gallic acid, and pharmaceutical grade and food grade gallic acid must be used;


◆ Other applications: Gallic acid can be used to make a variety of fuels, fire-fighting stabilizers, blue-black inks (galonic acid and trivalent iron ions to form blue-black precipitates, which are the raw materials for blue-black ink) and flute agents, which can be used as Plant growth regulator, combined with vitamin C as an enhanced bait fish, UV absorber, flame retardant, semiconductor photoresist material, can be formulated with anti-rust primer and aluminum alloy organic coating, used to prepare water-based drilling mud Fluidizer, the effect is comparable to or better than lignosulfonate. It is also used in the industry for tanning; it can also be used as a photographic developer. It is also used as a developer and an analytical reagent for detecting free inorganic acids, dihydroxyacetone, alkaloids, metals, and the like.

 

Galla extract series products

No.

Product Name

CAS No.

Specification

Standard

1

Gallic acid,   anhydrous

149-91-7

99.00%

--

2

Gallic acid,   monohydrate

5995-86-8

99.00%

--

3

Ethyl gallate

99-24-1

99.00%

--

4

Propyl gallate

121-79-9

98%~102%

USP/EP

5

Octyl gallate

1034-01-1

97%~103%

EP9.0

6

Dodecyl gallate

1166-52-5

97%~103%

EP9.0

7

Ellagic Acid

476-66-4

95.0%, 98.0%

--


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