Tetraacetylethylenediamine CAS 10543-57-4
Factory Supply Tetraacetylethylenediamine CAS 10543-57-4 with Best Price
- Appearance: White powder
- Purity: 99. 0%min
- Stock: In stock
- Sample: Available
- Zhishang Chemical: Tetraacetylethylenediamine Supplier & Manufacturer
Tetraacetylethylenediamine: The Complete Guide
Tetraacetylethylenediamine for Sale
|Other Name:||TAED; N,N’-1,2-ethanediylbis[N-acetyl-Acetamide|
|Type:||Organic synthesis intermediates; Pharmaceutical raw materials; Organic raw materials|
What is Tetraacetylethylenediamine?
Tetraacetylethylenediamine (TAED) can bleach Sodium percarbonate and also Sodium perborate at area temperature when its material is 0.5 ~ 5%, so it is an activator that can adjust to low-temperature bleaching. At present, the synthesis and preparation of TAED mainly take Ethylenediamine, acetic acid as well as Acetic anhydride as basic materials, as well as take on the two-step one kettle prep work procedure.
Tetraacetylethylenediamine (TAED) is generated from Ethylenediamine (ED) and Acetic anhydride (Ac2O) with a two-stage process. ED is first diacetylated to DAED. In the second action, DAED is then exchanged TAED using Ac2O with TriAED (Clariant, 1999). TAED is crystallized from the reaction mixture, filtered, washed, and also dried, and can likewise be granulated if required. The raw products made use of are virtually quantitatively existing in the product. No byproducts are developed.
TAED is prepared by acetylating diacetyl Ethylenediamine (DAED) with Acetic anhydride in a 5L reactor geared up with a packed purification tower with an inner diameter of 2.5 cm and also a size of 1 m. The reaction temperature level is evaluated 135 ℃ as well as the reflux proportion is 6. The molar proportion of Acetic anhydride to DAED varies from 3 to 5. Get a TAED return of up to 80%, with a 15% increase in distillation compared to the lack.
Tetraacetylethylenediamine (TAED) is a whitening activator, which is primarily utilized as detergent and additive for washing clothes as well as tableware. The regular concentration variety of TAED in these items is 1.4% to 13%. The small amount of TAED produced is likewise used for lightening of paper as well as textiles and production of Peracetic acid.
N. N, N ‘, N’ – Tetra Acetyl team Ethylenediamine is utilized as detergent for authors and also peroxide bleaching activator in pulp. It is also a crucial element of washing detergent and bleach, and also is utilized as an activator of energetic oxygen bleach (such as Salt perborate, Salt percarbonate, sodium superphosphate and also Salt persulfate). In the presence of alkaline liquid remedy, it responds with the peroxy anion HO2- to create triacetylethylenediamine as well as diacetyl Ethylenediamine, and releases peracetic acid, which is a quick acting whitening agent.
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Application of Tetraacetylethylenediamine
Tetraacetylethylenediamine (TAED) is a reliable low-temperature oxygen bleaching active agent, which is constructed from Ethylenediamine and acetic anhydride. It can be naturally degradable without any damage to the environment. In different cleaning agent solutions, this item will not affect the function of silicate, lightening agent, enzyme and also other cleaning agent accessories, as well as is mostly used as an additive of oxygen lightening agent. It can advertise oxygen based lightening representatives to fully exert their unique results of bleaching, lightening up, cleansing, as well as sanitation under low temperature conditions. It has excellent compatibility with numerous enzymes as well as other surfactants, as well as is safe. It entirely responds and also decomposes in a water temperature of 30 ℃ -60 ℃, launching responsive oxygen species, therefore accomplishing energy-saving, effective bleaching, and also safe cleaning effects
The Synthetic Method of Tetraacetylethylenediamine
British License GB1335204 divulges that the first step is to synthesize oxalylethylenediamine (DAED) with ethylenediamine and acetic acid, and after that accomplish the second step of acetylation with acetic anhydride. European license EP8369 discloses that continual procedure is embraced, and ethylenediamine and acetic anhydride are directly manufactured on a distillation column, yet it needs to make use of expensive acetic anhydride as a basic material for acetylation, as well as the price is incredibly high. British licenses GB20-96133A and also GB2106903A disclose making use of double-column reactors. The very first column finishes the response of acetic acid as well as ethylenediamine, the 2nd column executes acetylation of acetic anhydride, as well as the byproducts are gone back to the first column for reuse instead of acetic acid.
In the two-step synthesis response, in order to boost the reaction performance, a dehydrating agent is usually included in create an azeotrope with water. Catalysts such as phosphoric acid, sulfuric acid, boric acid, zinc acetate, and so on are added in the 2nd step reaction. However, the added drying out agent typically produces side responses with acetic acid and acetic anhydride. At the same time, given that the reaction speed of acetic anhydride as well as diacetylethylenediamine is slow, it is needed to raise the response temperature level to accelerate the reaction rate. Consequently, the basic reaction temperature is above 135 ° C to acquire a greater yield. Nevertheless, the boost of response temperature level will certainly boost the side reactions, and the shade of the acquired product will be strengthened, which will influence the appearance high quality of TAED items.
CN1255376C reveals a kind of prep work approach of tetraacetylethylenediamine, manufactures diacetylethylenediamine by ethylenediamine and also acetic acid, then manufactures tetraacetylethylenediamine by diacetylethylenediamine and acetic anhydride, is characterized because in synthesis reaction Include azeotropic solvent with acetic acid; include triethanolamine tungstosilicate, tetra-tert-butylammonium chloride, activated clay as well as p-toluenesulfonic acid as a catalyst in the synthesis reaction; ethylenediamine The molar ratio of reaction with acetic acid is 1:2.3 ~ 3.0, and the reaction temperature level is 90 ~ 120 ° C; the molar ratio of diacetylethylenediamine as well as acetic anhydride is 1:4 ~ 9, as well as the synthesis response temperature is 110 ~ 132 ° C.
The tetraacetylethylenediamine prepared by the development has a white look and a purity of greater than 99%, and the adoption of the creation has exceptional advantages.
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