| | 1401-55-4 Basic information More.. |
| Product Name: | Tannic acid | | Synonyms: | acid,tannic;acidetannique;castaneasativamilltannin;chestnuttannin;d’acidetannique(french);Larchtannin,extract;liquidambarstyraciflua;mimosatannin | | CAS: | 1401-55-4 | | MF: | C76H52O46 | | MW: | 1701.2 | | EINECS: | 215-753-2 | | Mol File: | 1401-55-4.mol |  |
Use
Tannic acid is a powder extracted from gall nuts that is soluble in water but less so in alcohol. Tannic acid was used by Major Russell in the mid-1850s for the tannin process of preparing dry collodion plates. The collodion plate was coated and sensitized as usual but the excess silver was then washed completely from the surface. A solution of tannic acid was then poured on and off the plate and the collodion film allowed to dry completely in the dark. The tannin plate could be preserved for months prior to exposure. The exposed plate was developed in pyrogallic acid, citric acid, and silver nitrate to replace that which was washed off during the initial preparation. The exposures required for tannin plates were as much as five times longer than wet collodion plates, which made them suitable only for landscape work.
- Tannic acid
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- US $6.00 / kg
- 2024-12-02
- CAS:1401-55-4
- Min. Order: 1kg
- Purity: More than 99%
- Supply Ability: 2000KG/Month
- Tannic acid
-
- US $60.00 / kg
- 2024-12-02
- CAS:1401-55-4
- Min. Order: 1kg
- Purity: 99
- Supply Ability: 5000
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1401-55-4
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