chromium sulfate tanning

Chromium Sulfate Reagent

Chromium Sulfate Reagent also known as Basic chromium sulfate is used commonly in the tanning of leather The Reagent grade denotes that this chemical is the highest quality commercially available and that the American Chemical Society has not officially set any specifications for this material

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Chemical Information Document for Chromium (VI)

and chromium leather-tanning powders There are many after-dying mordant alternatives to chromate including potassium aluminum sulfate aluminum acetate and ferrous sulfate Work with your chemical and dye suppliers to confirm that any chosen alternative is ZDHC MRSL compliant whenever applicable Additional Information Visit ECHA's Candidate List of substances of very high concern to

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How to Tan a Fox Fur

Tan the fur Create a bath with warm water and 1 pound of Chromium Sulfate Place the skin in the solution and let sit for 2 to 3 days Agitate the fur frequently and remember that too long is probably better than not long enough To test to see if tanning is working cut a thick corner and see if it is blue all the way through A white streak

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Chromium

26 04 1988The present chromium-free tanning process includes the method steps of pretanning a hide with a chromium-free tan until its shrinkage temperature is about 170 to 185 F submerging the hide in an acidic brine having a pH between 2 5 and 3 5 and adding (in sequence and in amounts sufficient to yield specified concentrations of each) pretanning agents syntans vegetable extracts

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Supply to chromium chemicals related industry

Supply to chromium chemicals related industry Sodium Dichromate (Na 2 Cr 2 O 7) Being the most important of all industrial chromium chemicals it is used in the production of chromic acid in leather tanning paints pigments and dyes in drilling muds and in wood preservation chemicals

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Chemical precipitation method for chromium removal and its

world supply of chromium is limited the tanning liquor lost can be made alkaline and the chromium hydroxide separated can be recovered by reacidification for reuse (Beghetto et al 2013 The New Zealand Institute of Chemistry 2016) The chromium sulfate produced is suitable as a tanning solution Leather production requires the use of large quantities of water Through the use of modern

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Bioremoval of Chromium (III) from Model Tanning

Chromium is present in the wastewater because of its use as a tanning agent in the form of basic chromium sulfate In this paper our efforts on isolation of Penicillium sp from a tannery effluent sample and its use as a sorbent to remove Cr(III) from a model solution are described Various parameters such as pH temperature biomass dose particle size of the biosorbent and initial metal ion

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Use of glucose to improve the environmental aspects of

chromium (III) sulfate (26% Cr 2O 3 33% basicity) and chrome alum (15% Cr 2O 3 0% basicity) were used as tanning agent The semi-industrial scale tanning runs were conducted in a stainless steel drum (1 2 m diameter 0 8 m length) by using heavy calf skins (8-12 kg) after the pickling stage (pH 2 6) In each run the skins were divided into two sides: one side was conventionally tanned with

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US Patent for Process for recovering proteins and

Waste products from the chrome-tanning of hides are washed and then chopped in water with subsequent hydrolyzation at a pH of at least 10 5 and at boiling or near-boiling temperature The resulting suspension is filtered to yield a polypeptide solution and a cake of solids consisting essentially of chromium hydroxide The solution is neutralized dehydrated cooled and filtered to provide a

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Basic chromium sulphate Purity 26%min China

Chromium sulphate Cas No 10101-53-8 our mateirial is an inorganically reduced Basic Chromium Sulphate complex in powder form VISHNUCHROME is used in leather for chrome tanning of leather manufacture - With excellent chromium penetration characteristics - Provides uniform chromium oxide distribution on the cross section and the grain of the leather The product is dried with most

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Chemical Information Document Version 2 0 August 2019

Chemical Information Document Version 2 0 August 2019 1 Chromium (VI) Other Names Hexavalent Chromium Cr(VI) Cr(VI) is the chromium element in its 6+ oxidation state Hexavalent Chromium can occur naturally in the environment from the erosion of natural chromium deposits or produced during industrial processes Chromium VI can naturally occur from the transformation of Cr(III) under the

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Tanning methods and the danger of using chromium

chromium-tanned leathers Chromium-Tanning C hromium salts especially chrome alum and chromium(III) sulfate are used in chromium-tanning of leather The chromium stabilizes the leather by cross linking the collagen fibers Chromium tanned leather can contain between 4 and 5% of chromium which is tightly bound to the proteins Although the form of chromium used for tanning is not the toxic

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A method of obtaining a chrome tanning agent

The method is concerned with the obtaining of chrome tanning agent is a basic sulfate of chromium (III) used as a mineral tanning agent in the leather and fur industry Sodium dichromate or potassium dissolved in sulfuric acid Then restore chromium (YI) and carry out the drying of the target product Recovery of chromium (YI) as follows First restore 50% in the reaction medium chromium (YI

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Bioaccumulation of Chromium from Tannery Wastewater:

The presence of chromium in the effluent is a major concern for the tanning industry Currently chemical precipitation methods are practiced for the removal of chromium from the effluent but that leads to the formation of chrome-bearing solid wastes The other membrane separation and ion exchange methods available are unfeasible due to their cost

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T3DB: Chromium(III) sulfate

Chromium(III) sulfate usually refers to the inorganic compound with the formula Cr2(SO4)3 дуў 12(H2O) This consists of the hydrated sulfate salt of the metal aquo complex with the formula [Cr(H2O)6]3+ which is responsible for the purple color of this salt It is widely used in the tanning of leather with associated environmental damage Chromium is most toxic in its +6 oxidation state

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Chromium sulfate 33%

Chromium sulfate 33% Appearance: green crystalline powder Packaging: 25 kg bags Приложение Техническа информация It is used for leather tanning Name: Chromium sulfate Chemical formula: Cr(OH)SO 4 Molecular weight: CAS no: 12336-95-7 UN no: Изпрати запитване за този продукт : Запознат съм с Политиката

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Products

Chromium Sulphate is majorly used in the leather industry for tanning and processing Chromic Acid High purity Chromic Acid is used in to manufacture metal and plastic coatings Chrome Oxide Green Also known as Chromium (III) Oxide it is used as an inorganic pigment in paints architectural coatings plastics roofing tiles and ceramic tiles SODIUM SULFATE It finds a range of applications

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Chromium Compounds Inorganic

The other significant chromium chemicals include basic chromium sulfate (leather tanning) chromium oxide (metallurgical refractory and pigment applications) chromium pigments and other chromates and dichromates Use of potassium dichromate and ammonium dichromate has nearly disappeared There have not been any new players in the chromium chemicals industry for the past

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Process for the manufacture of basic chrome tanning

29 06 1976Basic chromium salts are valued in the tanning industry as high-quality tanning agents The most widely used tanning agent of this kind is a chromium(III) sulfate having a basicity of 1/3 Over recent years even greater use has been made of chromium(III) sulfates masked by formate radicals since even higher basicities may be achieved with

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Global Chromium Hydroxide Sulfate Market 2018 by

Global Chromium Hydroxide Sulfate Market 2018 by Manufacturers Regions Type and Application Forecast to 2023 Pages: 139 Published Date: 21 Nov 2018 Category: Chemical Material Description Table of Content Tables and Figures Companies Mentioned Sample Report Chromium Hydroxide Sulfate is commonly known as chrome tanning agent green powder very soluble in

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Chromium ppt

Chromium ppt 1 Kundan Samal 2 Appearance-Silvery metallic Atomic number-24 Category-Transition metal Group period block-6 4 d Oxidation States-+6 and +3(Strongly acidic oxide) Crystal Structure-BCC(body centered cubic) Isotopes-52Cr 53Cr 54Cr Ore-Chromite(FeCr2O4) 3 Chromium(VI) is more carcinogenic than Chromium(III) Hexavalent chromium exists in alkaline strongly oxidizing

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Chromium(III) sulfate hydrate

Chromium(III) sulfate hydrate 1 Products Synonym: Chromic sulfate hydrate Chromium trisulfate CAS Number: 15244-38-9 Linear Formula: Cr 2 (SO 4) 3 xH 2 O Molecular Weight: 392 18 (anhydrous basis) EC Number: 233-253-2 MDL number: MFCD00150215 NACRES: NA 23 PubChem Substance ID: 24861064 Popular Documents: Specification Sheet (PDF) You have selected the maximum

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Tanning Using Basic Chrome Sulfate

The ash obtained in this process is rich in chromium oxide which can be recovered and reused in the tanning process Firstly the method consists of obtaining sodium chromate followed by the production of basic chromium sulfate that can be applied in leather tanning Preliminary tests were carried out utilizing the tanning salt solution obtained from the ash in tanning hide powder

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