10543-57-4 Usage
Description
Tetraacetylethylenediamine (TAED) is an off-white to beige granular powder that functions as a peroxide bleach activator. It is primarily used in the production of household detergents and paper pulp, where it enhances the effectiveness of active oxygen bleaching agents.
Uses
Used in Household Detergents and Laundry Washing:
Tetraacetylethylenediamine is used as a peroxide bleach activator for enhancing the cleaning power of laundry detergents and bleaches. It is particularly effective in activating active oxygen bleaching agents such as sodium perborate, sodium percarbonate, sodium perphosphate, and sodium persulfate, leading to improved stain removal and whitening of fabrics.
Used in Dishwashing Additives:
In the dishwashing industry, TAED serves as a bleaching activator in detergents and additives, ensuring a higher level of cleanliness and hygiene for dishes and utensils. The typical concentration of TAED in these products ranges between 1.4% and 13%.
Used in Paper Industry:
Tetraacetylethylenediamine is also utilized in the paper industry for the bleaching of paper pulp. Its activation of peroxide-based bleaching agents results in brighter and cleaner paper products.
Used in Textile Bleaching:
The textile industry employs TAED as a bleaching activator to whiten and clean fabrics more effectively. This application contributes to the production of textiles with enhanced visual appeal and improved durability.
Used in Peracetic Acid Generation:
A small portion of TAED is used in the generation of peracetic acid, a fast-acting bleaching agent. This versatile compound finds applications in various industries, including water treatment, medical sterilization, and food processing, due to its potent antimicrobial properties and rapid action.
Preparation
Tetraacetylethylenediamine (TAED) is produced in a two stage process from ethylenediamine (ED) and acetic anhydride (Ac2O). ED is first diacetylated to DAED. In the second step DAED is subsequently converted with Ac2O via TriAED into TAED (Clariant, 1999). TAED is crystallized out of the reaction mixture, filtered, washed and dried, and if necessary also granulated. The raw materials used occur almost quantitatively in the product. Byproducts are not formed.
TAED was prepared by acetylation of diacetylethylenediamine (DAED) with acetic anhydride in a 5 L reactor coupled with a packed distillation column, 2.5 cm in inside diameter and 1 m in length. The reaction temperature was set at 135 °C and the reflux ratio at 6. The molar ratio of acetic anhydride to DAED was varied from 3 to 5. A TAED yield as high as 80% was obtained, higher by 15% than in the absence of distillation.
Health Hazard
TAED is of very low toxicity by all exposure routes examined. Up to 2 g/kg BW there is no acute toxicity. TAED is practically non-irritating to skin and eyes and there is no evidence of a sensitizing potential by skin contact. The only effect after repeated oral and dermal dosing was reversible centrilobular hypertrophy in the liver at high doses due to the induction of metabolizing enzymes. In a 90-day whole body inhalation study no adverse effects in the rat lung, respiratory tract or nasal mucosa were observed. Biokinetic data showed that TAED is rapidly absorbed from the rat intestine and largely metabolized via diacetylation to TriAED and DAED which are excreted in the urine.
Check Digit Verification of cas no
The CAS Registry Mumber 10543-57-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,0,5,4 and 3 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 10543-57:
(7*1)+(6*0)+(5*5)+(4*4)+(3*3)+(2*5)+(1*7)=74
74 % 10 = 4
So 10543-57-4 is a valid CAS Registry Number.
10543-57-4Relevant articles and documents
Kinetic model of acylation of diacetylethylenediamine
Platonova,Akhmetshin,Kossoi,Vdovets,Laskin,Malin,Sitdikov
, p. 1808 - 1812 (2008)
Descriptive kinetics of synthesis of tetraacetylethylenediamine by acylation of diacetylethylenediamine with acetic acid anhydride was examined. The apparent rate constants of the process were obtained, and a mathematical model adequately describing the process was constructed.