ChemicalBook > CAS DataBase List > Ultranox 626

Ultranox 626

Appearance Application Features

Product Name: Ultranox 626
CAS No.: 26741-53-7
Chemical Name: Ultranox 626
Synonyms: THP-24;antioxidant 24;Bis(2,4-di-tert-butylphenyl) pentaerythritol diphosphite;Bis-(2,4-di-tert-butyl-pheny)-phosphiterythritol diphosphite;AN 626;AO-626;mark pep 24;Ultranox 626;Alkanox-P-24;CHLUMIAO 626
CBNumber: CB0855183
Molecular Formula: C33H50O6P2
Formula Weight: 604.69
MOL File: 26741-53-7.mol

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Ultranox 626 Property

Melting point:: 160-178°C
Boiling point:: 555.8±50.0 °C(Predicted)
Density: 1.166[at 20℃]
vapor pressure: 0Pa at 25℃
storage temp.: under inert gas (nitrogen or Argon) at 2-8°C
solubility: Chloroform (Slightly), Hexanes (Slightly, Heated)
form: Solid
color: White to Off-White
Water Solubility: 93μg/L at 25℃
Stability:: Hygroscopic
InChIKey: AIBRSVLEQRWAEG-UHFFFAOYSA-N
SMILES: C1C2(COP(OC3=CC=C(C(C)(C)C)C=C3C(C)(C)C)OC2)COP(OC2=CC=C(C(C)(C)C)C=C2C(C)(C)C)O1
LogP: 10.9 at 25℃
CAS DataBase Reference: 26741-53-7(CAS DataBase Reference)
EPA Substance Registry System: Bis(2,4-di-tert-butylphenyl) pentaerythritol diphosphite (26741-53-7)

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Safety

HS Code: 2920.29.0000

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H410Very toxic to aquatic life with long lasting effects

Precautionary statements

P273Avoid release to the environment.

P391Collect spillage. Hazardous to the aquatic environment

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

TCI Chemical

Product number: B5664
Product name: 3,9-Bis(2,4-di-tert-butylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane
Purity: >95.0%(GC)
Packaging: 5g
Price: $42
Updated: 2025/07/31

TCI Chemical

Product number: B5664
Product name: 3,9-Bis(2,4-di-tert-butylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane
Purity: >95.0%(GC)
Packaging: 25g
Price: $125
Updated: 2025/07/31

TRC

Product number: A697505
Product name: Antioxidant24
Packaging: 50g
Price: $95
Updated: 2021/12/16

AK Scientific

Product number: O821
Product name: Bis(2,4-di-tert-butylphenyl)pentaerythritoldiphosphite
Packaging: 25g
Price: $117
Updated: 2021/12/16

Biosynth Carbosynth

Product number: FA40363
Product name: AntiOxidant 24
Packaging: 250g
Price: $120
Updated: 2021/12/16

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Ultranox 626 Chemical Properties,Usage,Production

Appearance

Ultranox 626 is a white powder or granule.

Application

Antioxidant 626 (ultranox 626) is Approved by the FDA for food contact applications under 21CFRl78.2010 covering antioxidants and/or stabilizers for polymers.

Features

Ultranox 626 (Antioxidant 24, Irgafos 126) is suitable for polyolefins, polyesters, styrenes, engineering thermoplastics, PVC, elastomers and adhesives. Its products have excellent color stability, reduced polymer degradation, low dosage and higher phosphorus content than competitive phosphite antioxidants. It has synergistic effects when used with light stabilizers such as benzophenone and benzotriazole.

Description

Antioxidant 626 is a white to off-white powdery substance with low volatility and higher efficiency. It is often used in combination with hindered phenolic antioxidants.

Characteristics

Excellent colour stability during compounding, fabrication and end-use.
Reduction in polymer degradation during processing.
Improved gas fading performance in many applications.
High performance at low loading levels for more cost-effective formulations.
Higher phosphorous content than competitive phosphite antioxidants.
Synergism when used with light stabilizers such as benzophenones and benzotriazoles.

Uses

Antioxidant 626 is suitable for: polyolefin and olefin copolymers, polycarbonate, polyamide and other engineering plastics, rubber and elastomers, coatings and adhesives.

Definition

Ultranox 626 is a solid organophosphite antioxidant that improves gas fading performance and color stability during compounding, fabrication, and end use. It delivers high performance at low loading rates, making this a cost-effective addition to polymer formulas. Ultranox 626 synergizes with benzophenone and benzotriazole light stabilizers. It is so effective that it can replace another phosphite antioxidant in your formula and deliver equivalent performance at a significantly lower dosing rate.

Flammability and Explosibility

Not classified

Synthesis

96-76-4

3643-70-7

26741-53-7

(3) The product dichloropentaerythritol diphosphite obtained from step (2) was dropwise added to a 0.6 mol/L aqueous solution of 2,4-di-tert-butylphenol. The molar ratio of 2,4-di-tert-butylphenol to dichloropentaerythritol diphosphite was maintained at 2.30:1. The mixture was stirred under nitrogen at a speed of 800 rpm and reacted at 60°C for 2 hours. The hydrogen chloride gas generated during the reaction was absorbed by a sodium hydroxide solution. (4) The solvent was removed by vacuum distillation under reduced pressure at 100°C and 0.06 MPa. An appropriate amount of isopropanol was then added to the residue, and the mixture was stirred to crystallize the product. (5) The reaction mixture obtained from step (4) was subjected to suction filtration to yield a white solid powder, identified as bis(2,4-di-tert-butylphenyl) pentaerythritol diphosphite.

References

[1] Patent: CN108250240, 2018, A. Location in patent: Paragraph 0034; 0037; 0038; 0106; 0108; 0110; 0112; 0114

Ultranox 626 Preparation Products And Raw materials

Raw materials

Preparation Products

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View Lastest Price from Ultranox 626 manufacturers

WUHAN FORTUNA CHEMICAL CO., LTD

Product: Antioxidant 24 26741-53-7
Price: US $0.00/Kg/Drum
Min. Order: 1KG
Purity: 95%min
Supply Ability: 1000kg
Release date: 2021-08-25

Hebei Chuanghai Biotechnology Co., Ltd

Product: Antioxidant 24 26741-53-7
Price: US $10.00/KG
Min. Order: 100KG
Purity: 99%
Supply Ability: 100 mt
Release date: 2024-12-02

Hebei Chuanghai Biotechnology Co., Ltd

Product: Ultranox 626 26741-53-7
Price: US $0.00-0.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 500000kg
Release date: 2024-11-01

26741-53-7, Ultranox 626Related Search:

Clindamycin phosphate Pentaerythrityl oleate Di-tert-butyl peroxide Sodium triacetoxyborohydride Antioxidant 1010 tert-Butylchlorodiphenylsilane 4,4'-Thiobis(6-tert-butyl-m-cresol) Butylated Hydroxytoluene Antioxidant 168 SULPHOSUCCINIC ACID ESTER Antioxidant 1520 Antioxidant 1330 Dipentaerythritol Distearyl thiodipropionate Bis(2,6-di-ter-butyl-4-methylphenyl)pentaerythritol-diphosphite 3,9-Bis(2,4-dicuMylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane DI-TERT-BUTYL ETHER Complex antioxidant

antioxidant 24

Ultranox 626

3,9-bis(2,4-di-tert-butylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane

BIS-(2,4-DI-TERT-BUTYLPHENYL)PENTAERYTHRITOL DIPHOSPHITE (ULTRANOX 626)

2,4,8,10-Tetraoxa-3,9-diphosphaspiro5.5undecane, 3,9-bis2,4-bis(1,1-dimethylethyl)phenoxy-

3,9-Bis(2,4-di-tert-butylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro(5.5)undecan

4,8,10-Tetraoxa-3,9-diphosphaspiro[5.5]undecane, 3,9-bis[2,4-bis(1,1-dimethylethyl)phenoxy]-2

phosphorous acid, cyclic neopentanetetrayl bis(2,4-di-tert-butylphenyl)ester

Alknox P-24(Great Lake)Ultranox 626(GE)

cyclic neopentanetetrayl bis(di-tert-butylphenyl)phosphite

Antioxidant AT-626

Bis-(2,4-di-tert-butylphenyl)-pentaerythrityl diphosphite

2,2'-Bis(2,4-di-tert-butylphenoxy)spiro[1,3,2-dioxaphosphorinane-5,5'-[1,3,2]dioxaphosphorinane]

Alkanox-P-24

Antioxidant 24, Bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite

THP-24

Bis(2,4-di-tbutylphenyl) Pentaery thritol Diphosphite

AN 626

antioxidant AN 626

Bis-(2,4-di-tert-butyl-pheny)-phosphiterythritol diphosphite

Antioxidant 626 (Bis(2.4-di-t-butylphenyl) Pentaerythritol Diphosphite)

3,9-bis(2,4-bis(1,1-dimethylethyl)phenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro(5.5)undecane

ADK Stab PEP 24

mark pep 24

Bis(2,4-di-tert-butylphenyl) pentaerythritol diphosphite

Antioxidants Impurity 14

Ultranox 626 @50 μg/mL in Isopropanol

AO-626

Pentaerythritol Bis(2,4-di-tert-butylphenylphosphite)

Antioxidant 24 ISO 9001：2015 REACH

ANTIOXIDANT TRUELICHT AN626

Antioxidant Sunoxy 626

RIANOX 626 Phosphite Antioxidant 626

Antioxidant RIANOX 626/626FF

Antioxidant 24 CAS 26741-53-7

Sinanox? 626 / Ultranox 626 / Irgafos 126

Secondary Antioxidants YD 626

Bis (2, 4-ditert-butylphenyl) pentaerythritol bisdiphosphite

CHLUMIAO 626

Ultranox 626/Bis(2,4-di-t-butyl-phenyl)pentaerythritol diphosphite/Antioxidant 626

26741-53-7

Industrial/Fine Chemicals

Organics