Gallic acid
Gallic acid
- CAS:
- 149-91-7
- MF:
- C7H6O5
- MW:
- 170.12
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Properties
- Melting point:
- 251 °C (dec.) (lit.)
- Boiling point:
- 259.73°C (rough estimate)
- Density
- 1.694
- vapor pressure
- 0Pa at 25℃
- refractive index
- 1.5690 (estimate)
- storage temp.
- 2-8°C
- solubility
- Methanol (Slightly), Water (Slightly, Heated)
- pka
- 4.41(at 25℃)
- form
- Powder
- color
- Off-white
- PH
- 3.75(1 mM solution);3.22(10 mM solution);2.71(100 mM solution)
- Water Solubility
- 12 g/L cold water
- Merck
- 14,4345
- BRN
- 2050274
- Stability:
- Stability Stable, but may discolour upon exposure to light. Hygroscopic. Incompatible with strong oxidizing agents, strong bases, acid chlorides, acid anhydrides.
- InChIKey
- LNTHITQWFMADLM-UHFFFAOYSA-N
- LogP
- 0.7
Safety Information
- Symbol(GHS)
GHS07
- Signal word
- Warning
- Hazard statements
- H315-H319-H335
- Precautionary statements
- P302+P352-P305+P351+P338
- Hazard Codes
- Xi
- Risk Statements
- 36/37/38
- Safety Statements
- 26-36-24/25-37/39
- WGK Germany
- 2
- RTECS
- LW7525000
- F
- 8-9-23
- TSCA
- Yes
- HS Code
- 29182900
- Toxicity
- LD50 in rabbits (g/kg): 5.0 orally (Dollahite)
Use
The production of gallic acid is challenging. Conventionally, it has been produced by acid hydrolysis of tannic acid. However, this process is expensive due to low yields and high impurities. To overcome this problem, microbial production of gallic acid has been suggested. For example, in a solid-state fermentation of Teri pod cover powder containing tannin using Rhizopus oryzae, a yield of 90.9 % based on the tannin content of 58 % of the substrate was observed. In a submerged culture of Aspergillus aceleatus DBF9 growing on a medium with 3 % tannin, a maximal product concentration of 6.8 g.L-1 was reported. With tannic acid, even higher product concentrations of up to 25 g.L-1, a yield of 0.83 g of gallic acid per gram of tannic acid, and a productivity of 0,56 g.L-1.h-1 were shown using Apergillus fischeri MTCC 150 in submerged cultivation. An alternative is the enzymatic hydrolysis of tannic acids using tannase produced by microorganisms (e.g. Aspergillus fischeri or R. oryzae). For example, propyl gallate could be produced using a tannase from Emericela nidulans immobilized on ionic and covalent supports.
43 India supplier list of "Gallic acid"
- Product Name:Gallic acid
- Products Intro:Purity: 98% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Reagent
- Country/Region: INDIA
- Product Name:Gallic acid
- Products Intro:Purity: 99% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Reagent
- Country/Region: INDIA
- Product Name:Gallic acid
- Products Intro:Purity: 98% | Package: 1 kg,5 kg, 10 kg,25kg And 1MT
- Company Type: Manufacturer
- Country/Region: INDIA
- Product Name:Gallic Acid
- Products Intro:Purity: 98% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Trader
- Country/Region: INDIA
- Product Name:3,4,5-Trihydroxybenzoic acid
- Products Intro:Purity: 99% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Trader
- Country/Region: INDIA
- Product Name:Gallicacid
- Products Intro:Brand:sigma aldrich | Product Number:G7384 | Purity:97.5-102.5%(titration)
- Company Type: Trader
- Country/Region: INDIA
- Product Name:Gallic acid
- Company Type: Reagent
- Country/Region: INDIA