2,5-DI-tert-PENTYLHYDROQUINONE

PRODUCT IDENTIFICATION

CAS NO. 79-74-3, 211107-60-7

2,5-DI-tert-PENTYLHYDROQUINONE

EINECS NO. 201-222-2
FORMULA C16H26O2
MOL WT.

250.38

H.S. CODE 2907.19.8000

UN NO.

 
TOXICITY Oral Rat LD50: 2000mg/kg
SYNONYMS 2,5-Di-t-pentylhydroquinone; 2,5-Di-tert-pentylbenzene-1,4-diol;
2,5-Di-tert-pentylhydroquinone; Santouar A; Santovar A; 2,5-Di-tert-amylhydroquinone; 2,5-Di-tert-amylbenzene-1,4-diol; 2,5-Bis(1,1-dimethylpropyl)-1,4-benzenediol; 2,5-Bis(1,1-dimethylpropyl)hydroquinone; 2,5-Di(tert-amyl)hydroquinone; 2,5-Bis(1,1-dimethylpropyl)hydroquinone;
SMILES c1(C(CC)(C)C)c(cc(c(c1)O)C(CC)(C)C)O

CLASSIFICATION

Antioxidant,

EXTRA NOTES

Primary antioxidant for organic polymers

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE white powder
MELTING POINT 180 C
BOILING POINT  
DENSITY

1.05

SOLUBILITY IN WATER

Slightly soluble

SOLVENT SOLUBILITY

Soluble in alcohol and benzene.

pKa  
log Pow 5.83 (Octanol-water)
VAPOR PRESSURE  
HENRY LAW CONSTANT  
OH RATE CONSTANT 6.42E-11 (cm3/molecule-sec at 25 C Atmospheric )

REFRACTIVE INDEX

1.443 - 1.446
VAPOR DENSITY  
NFPA RATINGS Health: 2; Flammability: 0; Reactivity: 0
FLASH POINT

124 C

STABILITY Stable under normal conditions

EXTERNAL LINKS & GENERAL DESCRIPTION

Wikipedia Linking
Antioxidants are frequently added to industrial products. A common use is as
stabilizers in fuels and lubricants to prevent oxidation, and in gasolines to prevent the polymerization that leads to the formation of engine-fouling residues.[243] In 2007, the worldwide market for industrial antioxidants had a total volume of around 0.88 million tons. This created a revenue of circa 3.7 billion US-dollars (2.4 billion Euros). They are widely used to prevent the oxidative degradation of polymers such as rubbers, plastics and adhesives that causes a loss of strength and flexibility in these materials.[245] Polymers containing double bonds in their main chains, such as such as natural rubber and polybutadiene, are especially susceptible to oxidation and ozonolysis. They can be protected by antiozonants. Solid polymer products start to crack on exposed surfaces as the material degrades and the chains break. The mode of cracking varies between oxygen and ozone attack, the former causing a "crazy paving" effect, while ozone attack produces deeper cracks aligned at right angles to the tensile strain in the product. Oxidation and UV degradation are also frequently linked, mainly because UV radiation creates free radicals by bond breakage. The free radicals then react with oxygen to produce peroxy radicals which cause yet further damage, often in a chain reaction. Other polymers susceptible to oxidation include polypropylene and polyethylene. The former is more sensitive owing to the presence of secondary carbon atoms present in every repeat unit. Attack occurs at this point because the free radical formed is more stable than one formed on a primary carbon atom. Oxidation of polyethylene tends to occur at weak links in the chain, such as branch points in low density polyethylene.

Material Safety Data Sheet (SongWon)

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SALES SPECIFICATION

APPEARANCE

white powder
PURITY

98.0% min

MELTING POINT

178 C min

VOLATILE LOSS

0.3% max

COLOR OF SOLUTION

97% (500nm)

ASH

0.1% max

TRANSPORTATION
PACKING 20kgs in aluminium Bag
HAZARD CLASS  
UN NO.  
SAFETY INFORMATION
Hazard Symbols: XN, Risk Phrases: 10-20-36/37/38, Safety Phrases: 9-16-26-33-37/39
PRICE INFORMATION