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403040

Sigma-Aldrich

Tannic acid

ACS reagent

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Synonym(s):
Gallotannin, Tannin
Empirical Formula (Hill Notation):
C76H52O46
CAS Number:
Molecular Weight:
1701.20
Beilstein:
8186396
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

grade

ACS reagent

Quality Level

autoignition temp.

980 °F

ign. residue

≤0.5%

loss

≤12.0% loss on drying, 105°C

mp

218 °C (lit.)

cation traces

Zn: ≤0.005%
heavy metals: ≤0.003%

SMILES string

Oc1cc(cc(O)c1O)C(=O)Oc2cc(cc(O)c2O)C(=O)OC[C@H]3O[C@@H](OC(=O)c4cc(O)c(O)c(OC(=O)c5cc(O)c(O)c(O)c5)c4)[C@H](OC(=O)c6cc(O)c(O)c(OC(=O)c7cc(O)c(O)c(O)c7)c6)[C@@H](OC(=O)c8cc(O)c(O)c(OC(=O)c9cc(O)c(O)c(O)c9)c8)[C@@H]3OC(=O)c%10cc(O)c(O)c(OC(=O)c%11cc(O)c(O)c(O)c%11)c%10

InChI

1S/C76H52O46/c77-32-1-22(2-33(78)53(32)92)67(103)113-47-16-27(11-42(87)58(47)97)66(102)112-21-52-63(119-72(108)28-12-43(88)59(98)48(17-28)114-68(104)23-3-34(79)54(93)35(80)4-23)64(120-73(109)29-13-44(89)60(99)49(18-29)115-69(105)24-5-36(81)55(94)37(82)6-24)65(121-74(110)30-14-45(90)61(100)50(19-30)116-70(106)25-7-38(83)56(95)39(84)8-25)76(118-52)122-75(111)31-15-46(91)62(101)51(20-31)117-71(107)26-9-40(85)57(96)41(86)10-26/h1-20,52,63-65,76-101H,21H2/t52-,63-,64+,65-,76+/m1/s1

InChI key

LRBQNJMCXXYXIU-PPKXGCFTSA-N

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1 of 4

This Item
T0200W3042041.00773
vibrant-m

403040

Tannic acid

vibrant-m

T0200

Tannic acid

vibrant-m

W304204

Tannic acid

vibrant-m

1.00773

Tannic acid

grade

ACS reagent

grade

-

grade

Halal, Kosher

grade

-

cation traces

Zn: ≤0.005%, heavy metals: ≤0.003%

cation traces

-

cation traces

-

cation traces

As: ≤0.0003%, heavy metals (as Pb): ≤0.004%

mp

218 °C (lit.)

mp

218 °C (lit.)

mp

218 °C (lit.)

mp

-

autoignition temp.

980 °F

autoignition temp.

980 °F

autoignition temp.

980 °F

autoignition temp.

-

ign. residue

≤0.5%

ign. residue

-

ign. residue

-

ign. residue

-

General description

Tannic acid (TA) is a natural, non-toxic organic acid with corrosion inhibitive property for metals and alloys. A chemiluminescence (CL) system of KIO4 (potassium periodate)–H2O2 (hydrogen peroxide)–Tween40 has been employed in the detection of tannic acid in industrial wastewater. Tannic acid hydrolyzes to form mainly glucose and gallic acid. Its astringent property is due to the presence of polyphenolic groups.

Application

Tannic acid may be used in the following processes:
  • Synthesis of ferric tannate complexes by reacting with metallic iron.
  • As a protein deproteinizing agent in genomic and plasmid DNAs preparation.
  • As a reductant in the synthesis of metal nano particles.

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

Flash Point(F)

390.2 °F

Flash Point(C)

199 °C

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Tannic acid as corrosion inhibitor for metals and alloys.
Kusmierek E and Chrzescijanska E.
Materials and Corrosion, 66(2), 169-174 (2013)
Deproteinization of bacterial genomic and plasmid DNAs by tannic acid.
van Huynh, N.
Journal of Microbiological Methods, 75(2), 379-381 (2008)
Tannic Acid: Chemistry, Analysis, and Toxicology: An Episode in the Pharmaceutics of Radiology.
Krezanoski JZ.
Radiology, 87(4), 655-657 (1966)
Reviewing the tannic acid mediated synthesis of metal nanoparticles.
Ahmad T.
Journal of Nanotechnology, 2014 (2014)
Fikret Türkan et al.
Journal of biochemical and molecular toxicology, 33(8), e22340-e22340 (2019-04-12)
Multiple studies have been recorded on the synthesis and design of multi-aim anti-Alzheimer molecules. Using dual butyrylcholinesterase/acetylcholinesterase inhibitor molecules has attracted more interest in the therapy for Alzheimer's disease. In this study, a tannic acid compound showed excellent inhibitory effects

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