Interactive IRUG Spectrum

Section: 9

Organic dyes and pigments (OD)

Page: 186

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Details

IRUG filename: IOD00186	Data type: Infrared	IRUG material class: Organic dyes and pigments (OD)
Sample type: Reference material	Common name(s): Tannic acid, Gallotannin, Natural Brown 6, CI75215	CAS name: Tannins
Sample source 1: Helmut Schweppe Collection of Early Synthetic Dyes	Source location 1: BASF, Ludwigshafen, Germany	Sample identifier 1: Tannic acid
Sample source 2: Getty Conservation Institute	Source location 2: The Getty Center, 1200 Getty Center Drive, Los Angeles, CA, US	Sample identifier 2: Tannic acid
Color: Beige to brown, light	Age: 1986, acquired	MW (relative): 1701.20, literature
Application: DRIFTS (diffuse reflectance infrared Fourier transform spectroscopy)	Mode: Refl	Originating institution name: Getty Conservation Institute
Originating institution acronym: GCI	Molecular formula: C76 H52 O46	CAS registry no: 1401-55-4

Related Structure(s)

IRUG Structure Tracking #: 405 Common Name(s): Tannic acid; Gallotannin CAS Name: 2,3-dihydroxy-5-({[(2R,3R,4S,5R,6R)-3,4,5,6-tetrakis({3,4-dihydroxy-5-[(3,4,5-trihydroxyphenyl)carbonyloxy]phenyl}carbonyloxy)oxan-2-yl]methoxy}carbonyl)phenyl 3,4,5-trihydroxybenzoate CAS Registry No: 1401-55-4 IRUG Material Class: Organic dyes and pigments (OD) Molecular Formula: C76 H52 O46 MW: 1701.19