Chemische Werke Hommel GmbH & Co. KG  

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Spezifikation

Produktbezug:
Produktnummer 1401554TU
Handelsname / Bezeichnung Tannin USP
CAS Nummer 1401-55-4
Andere Bezeichnungen / Synonyme•Gerbsäure; •TANNIC ACID; •TANNIC ACID, ACS; •Tannic Acid, FCC; •Tannic Acid, Powder, Reagent, ACS; •Tannic Acid, USP; •Tannic acid; •Tannic acid ; •Tannic acid , technical; •Tannic acid, ACS;
EG Nummer215-753-2
Zolltarifnummer / CN-Code32019090
Molekulargewicht [g/mol]1701,23
FormelC76H52O46


Parameter Spezifikation Einheit

Sensorische Prüfung
Farbe ≤ 5 gardner
Farbe gelblich
Geschmack neutraler bis leicht astringenter Geschmack
Geruch praktisch geruchlos

Physikalische Parameter
Dichte 0,30  –  0,45 g/ml
Form (Agregatzustand) Pulver
Trocknungsverlust ≤ 7,0 %
pH-Wert 3  –  4
Löslichkeit in Aceton: frei löslich
Löslichkeit in Ethanol: frei löslich
Löslichkeit in Wasser: leicht löslich

Identifikation
Gehalt ≥ 93 %
Identifizierung A, B, C: entspricht
Identifizierung Test auf Harze: keine Trübung
Identifizierung Test auf Stärkegummi: keine Trübung

Verunreinigungen
Glührückstand ≤ 1,0 %
Schwermetalle (als Pb) ≤ 20 ppm
Sulphatasche ≤ 0,1 %
Verunreinigung Gallussäure: ≤ 4,0 %

Elementare Verunreinigungen
Arsen (As) ≤ 3 ppm
Blei (Pb) ≤ 5 ppm

Zusätzliche Angaben:

Mindesthaltbarkeit: 2 Jahre

Lagerbedingungen: In dicht geschlossenen Behältern, bei Raumtemperatur, sauber und trocken, fern von direkter Sonneneinstrahlung und Wasser lagern.

Entspricht der Monographie: USP 40

Verpackung: 25-kg-Trommel mit PE-Beutel

regionaler Ursprung: CN

Zusammenfassung: Die Qualität der oben genannten Produkte entspricht der USP 40.


Chemische Werke Hommel GmbH & Co.KG
Dieses Dokument wurde elektronisch erzeugt und ist ohne Unterschrift gültig.
Waltrop, 28. Sep. 2023
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