Antioxidant 1790 Chemical Properties

Melting point:

163-165 °C(lit.)

Boiling point:

793.8±60.0 °C(Predicted)

Density 

1.172±0.06 g/cm3(Predicted)

vapor pressure 

0Pa at 20℃

storage temp. 

Sealed in dry,Room Temperature

solubility 

Acetonitrile (Slightly), DMSO (Slightly), Methanol (Slightly)

pka

11.36±0.28(Predicted)

form 

Solid

color 

White to Off-White

Water Solubility 

20μg/L at 20℃

InChIKey

XYXJKPCGSGVSBO-UHFFFAOYSA-N

SMILES

N1(CC2=C(C)C=C(C(C)(C)C)C(O)=C2C)C(=O)N(CC2=C(C)C=C(C(C)(C)C)C(O)=C2C)C(=O)N(CC2=C(C)C=C(C(C)(C)C)C(O)=C2C)C1=O

LogP

15.281 at 20℃

CAS DataBase Reference

40601-76-1(CAS DataBase Reference)

EPA Substance Registry System

1,3,5-Triazine-2,4,6(1H,3H,5H)-trione, 1,3,5-tris[[4-(1,1-dimethylethyl)-3-hydroxy-2,6-dimethylphenyl]methyl]- (40601-76-1)

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36

WGK Germany 

2

HS Code 

29336990

MSDS

• Language:English Provider:SigmaAldrich

Antioxidant 1790 Usage And Synthesis

Description

Antioxidant 1790, the appearance is white to off-white powder , Purity ≥95% . Antioxidant 1790 is a kind of hindered phenol primary antioxidant, It can be used in polypropylene, polyamide, ABS resin,polystyrene,elastic fiber, PE PP food package as USA FDA regulation .

Chemical Properties

White powder

Uses

Tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl) Isocyanurate as an antioxidant and/or stabilizer in polystyrene and rubber-modified polystyrene intended for use in contact with food at room temperature or below. Tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl) Isocyanurate is also used as a stabilizer in polyethelene and poloypropylene.

Application

For nylon series, polyester, ABS, polyolefin pipe, agricultural film, household appliances, styrene plastic and polyester.

Flammability and Explosibility

Non flammable

Safety

FDA approved for use in food contact applications in 178.2010, 177.1640.

Synthesis

To a 500-mL four-necked flask equipped with a stirrer, reflux condenser and thermometer were added 19 g (0.1 mol) of trisodium salt of cyanuric acid, 71 g (0.33 mol) of 2-tert-butyl-3-chloromethyl-4,6-dimethylphenol, 200 mL of N,N-dimethylformamide, and 1 g of phase transfer catalyst. The reaction mixture was heated to 120°C and stirred for 14 hours under continuous nitrogen protection. Upon completion of the reaction, the mixture was cooled to 50-60°C and filtered. The filtrate was distilled at 0.005-0.15 MPa pressure to remove N,N-dimethylformamide. To the residue, 200 mL of toluene and 100 mL of water were added and stirred until all materials were completely dissolved, then left to partition and separate the aqueous phase. The organic phase was distilled to remove the remaining water and about 160 mL of toluene. 150 ml of methanol was added slowly, stirred and refluxed until the material was completely dissolved. 5 g of activated charcoal was added for decolorization, and after hot filtration, the product was cooled and crystallized, filtered, and washed to give 54.6 g of dry 1,3,5-tris(4-(tert-butyl)-3-hydroxy-2,6-dimethylbenzyl)-1,3,5-triazinane-2,4,6-trione with a melting point of 157-160 °C and a purity of 98.3%. The product was characterized by infrared spectroscopy.

Advantages

Low dosage and excellent performance: only with 0.02%~0.1% addition can effectively prevent goods from heat and oxidization degradation during the usage and high temperature processing;Great synergy with some secondary antioxidants such as phosphite ester and thiodipropionate type.Geat boiling water resistance ability;Good resistance to extraction of the detergent cleaning.

References

[1] Patent: CN103420932, 2016, B. Location in patent: Paragraph 0024; 0025; 0026
[2] Patent: CN106699678, 2017, A. Location in patent: Paragraph 0052; 0053

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