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Organic Acids

Tannic Acid Extra Pure

RA002537 CAS 1401-55-4 Extra Pure

Identity

Product code
RA002537
CAS number
1401-55-4
Grade
Extra Pure
Molecular formula
C76H52O46
Molecular weight
1701.22

Classification

Technical Data

Properties

PropertyValueUnit
Physical state at 20 °C Solid —
Colour Light brown —
Odour Faint odour —
Melting point/ Freezing point [°C] 218 °C °C
Decomposition point [°C] 200 °C °C
Auto-ignition temperature [°C] 527 °C °C
Flash point [°C] 199 °C °C
Solubility in water [% weight] Soluble in water —

These are recorded catalogue property values. Product specification limits, where available, are listed under Specifications.

Specifications

ParameterSpecificationUnit
Appearance Yellowish white to light brown amorphous powder —
Heavy metal Max 0.004 % %
Arsenic (As) Max 0.0003 % %
Loss on drying (105 °C) Max 9 % %
Sulphated ash Max 1.0 % %
Reaction of aqueous solution Passes test —
Dextrins, gum, salts, sugars Passes test —
Resinous substances Passes test —

3 grades of this substance are listed. Each grade is a separate product with its own specifications, pack sizes and documents.

Packaging

Pack size SKU
100 g RA002537-PK-100G
250 g RA002537-PK-250G
500 g RA002537-PK-500G