Tannic acid
1401-55-4 Basic informationMore
- 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.
Lastest Price from Tannic acid manufacturers
- Tannic acid
-
- US $6.00 /kg
- CAS:1401-55-4
- Min. Order: 1kg
- Purity: More than 99%
- Supply Ability: 2000KG/Month
- 2024-12-02
- Tannic acid
-
- US $60.00 /kg
- CAS:1401-55-4
- Min. Order: 1kg
- Purity: 99
- Supply Ability: 5000
- 2024-12-02
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- Company Name:WUFENG CHICHENG BIOTECH CO LTD
- Tel:0717-5757168 13997700995
- Products Intro:Product Name:Tannic acid
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Purity:93% Package:25KG桶或袋 - CB Index:58
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Purity:82%,91% Package:25kg bag or25kg fiber drum Remarks:Manufacturer More... - CB Index:62
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Purity:AR Package:100g/RMB 432.90;25g/RMB 123.90;500g/RMB 1544.90 More... - CB Index:65
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