Antioxidant 168

Synonym(s):2,4-Bis(1,1-dimethylethyl)phenol phosphite (3:1);Tri(2,4-di-tert -butylphenyl) phosphite;Tri(2,4-di-t -butylphenyl) phosphite;Tris(2,4-di-tert-butylphenyl) phosphite

CAS NO.：31570-04-4
Empirical Formula: C42H63O3P
Molecular Weight: 646.94
MDL number: MFCD00072706
EINECS: 250-709-6
SAFETY DATA SHEET (SDS)
Update Date: 2024-12-21 16:41:59

What is Antioxidant 168?

Description

ANTIOXIDANT 168 is a secondary antioxidant with excellent resistance to extraction by water, low volatility and high heat stability. It can effectively decompose hydroperoxides produced during the processing of polymeric materials. ANTIOXIDANT 168 usually not used alone, is compounded with hindered phenolic primary antioxidants such as 1010 to improve thermostability of polymer during the processing. There are over ten kinds of blends of 168 with phenolic antioxidants, widely use in the polymer materials such as PE, PP, PA, PC, ABS and so on.

The Uses of Antioxidant 168

This product is an excellent Antioxidant wnameely applied to polyethylene, polypropylene, polyoxymethylene, ABS resin, PS resin, PVC, engineering plastics, binding agent, rubber, petroleum etc. for product polymerization.

The Uses of Antioxidant 168

Tris(2,4-tert-butylphenyl) Phosphite is an intermediate in the synthesis of Tris(2,4-di-tert-butylphenyl)phosphate (T884500), a processing stabilizer for polymers.

What are the applications of Application

Antioxidant 168 is a kind of phosphite ester antioxidant as processing stabilizer, used for polypropylene, polyethylene, and adhesives. The amount to be used may be 0.1%~1.0% depending on the substrate, processing conditions, and requirements of the end application. Blends with hindered phenols are particularly effective.In addition, they use combination with light stabilizers when need.

Definition

ChEBI: Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) is an alkylbenzene.

General Description

Tris(2,4-di-tert-butylphenyl) phosphite is a triaryl based phosphite that can be used in catalysis and metallation. Its characteristic to undergo metallation reaction and provide a cost effective synthetic processes allows it to be useful in biaryl coupling reactions.

Flammability and Explosibility

Not classified

Safety

Antioxidant 168 is approved for indirect food contact applications.

Properties and Applications

TEST ITEMS	SPECIFICATION
APPEARANCE	WHITE INCOMPACT POWDER
CONTENT	99.0% min
MELTING RANGE	183-187 °C
VOLATILE	0.3% max
SOLUBILITY 2g/20ml TOLUENE	CLEAR
FREE 2,4-DITERT-BUTYPHENOL	0.2% max (wt)
TRANSMITTANCE	98% min 425nm
TRANSMITTANCE	98% min 500nm
ACID VALUE,mg KOH/g	0.3% max
HYDROLYSIS TIME (90°C WATER ）	14 h min
SOLUBILITY	1% ACETONE
	30% TOLUENE
	36% CHLOROFORM
	4% ETHYL ACETATE
	11% n-HEXANE
	0.1% ETHANOL
	36% DICHLOROETHANE
	6% max PHENYLETHYLENE
	0.01% max WATER

Properties of Antioxidant 168

Melting point:	181-184 °C(lit.)
Boiling point:	594.2±50.0 °C(Predicted)
Density	-0.98
Flash point:	46°C (115°F)
storage temp.	2-8°C
solubility	Acetonitrile (Slightly), Chloroform (Sparingly), Ethyl Acetate (Sparingly, Heate
form	Powder
color	white
Specific Gravity	0.98
Hydrolytic Sensitivity	4: no reaction with water under neutral conditions
Sensitive	moisture sensitive
Stability:	Moisture Sensitive
CAS DataBase Reference	31570-04-4(CAS DataBase Reference)
EPA Substance Registry System	Tris(2,4-di-tert-butylphenyl) phosphite (31570-04-4)

Safety information for Antioxidant 168

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation
Precautionary Statement Codes	P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection.