403040

Tannic acid

ACS reagent

• Sinonimo/i: Gallotannin, Tannin
• Formula empirica (notazione di Hill): C₇₆H₅₂O₄₆
• Numero CAS: 1401-55-4
• Peso molecolare: 1701.20
• Beilstein: 8186396
• Numero CE: 215-753-2
• Numero MDL: MFCD00066397
• Codice UNSPSC: 12352100
• ID PubChem: 24865158
• NACRES: NA.21

Proprietà

• Grado: ACS reagent
• Livello qualitativo: 200
• Temp. autoaccensione: 980 °F
• Residuo alla calcinazione: ≤0.5%
• Perdita: ≤12.0% loss on drying, 105°C
• Punto di fusione: 218 °C (lit.)
• Cationi in tracce: Zn: ≤0.005%; heavy metals: ≤0.003%
• Stringa SMILE: 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; LRBQNJMCXXYXIU-PPKXGCFTSA-N

Descrizione

Descrizione generale

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.

Applicazioni

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.

Informazioni sulla sicurezza

• Codice della classe di stoccaggio: 11 - Combustible Solids
• Classe di pericolosità dell'acqua (WGK): WGK 2
• Punto d’infiammabilità (°F): 390.2 °F
• Punto d’infiammabilità (°C): 199 °C
• Dispositivi di protezione individuale: Eyeshields, Gloves, type N95 (US)