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4-Tert-BUTLYCATECHOL |
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PRODUCT IDENTIFICATION |
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| CAS NO. |
98-29-3 |
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| EINECS NO. | 202-653-9 | |
| FORMULA | (CH3)3CC6H3(OH)2 | |
| MOL WT. |
166.22 |
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| H.S. CODE | 2907.29 | |
| TOXICITY | Oral rat LD50: 2820 mg/kg | |
| SYNONYMS | p-tert-Butylpyrocatechol; 1,2-Dihydroxy-4-tert-butylbenzene; | |
| 4-tert-butyl-Pyrocatechol; p-tert-Butylcatechol; 4-tert-Butyl-1,2-benzenediol; 4-tert-Butyl-1,2-dihydroxybenzene; 4-tert-Butylcatechin; 4-tert-Butylcatechol; 4-tert-Butylpyrocatechol; 1,2-Benzenediol, 4-(1,1-dimethylethyl-) 1,2-benzenediol; t-Butyl catechol; 4-t-Butylcatechol; p-t-Butylpyrocatechol; 4-t-Butylpyrocatechol; 4-tert-Butylpyrokatechin; 4-t-Butyl-1,2-benzenediol; | ||
| PRICE |
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CLASSIFICATION |
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PHYSICAL AND CHEMICAL PROPERTIES |
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| PHYSICAL STATE | white solid, phenol like odor | |
| MELTING POINT | 50 - 52 C | |
| BOILING POINT | 283 - 285 C | |
| SPECIFIC GRAVITY |
1.05 - 1.07 |
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| SOLUBILITY IN WATER | 60g/100g ( 500g/100g in methanol) | |
| AUTOIGNITION | ||
| pH | ||
| VAPOR DENSITY | ||
| NFPA RATINGS | Health: 2; Flammability: 1; Reactivity: 0 | |
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REFRACTIVE INDEX |
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| FLASH POINT |
91 C |
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| STABILITY | ||
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APPLICATIONS |
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| TBC (4-tert-ButylCatechol) is usually added as a stabilizer and an inhibitor of polymerization to butadiene, styrene and other reactive monomer streams. It is 25 times higher than hydroquinone at 60 deg C for polymerization inhibitory effect. It is used as a polymerization inhibitor in processing Styrene, Butadiene, and Vinyl Acetate monomers, Polyester resins. Also used as a stabilizer in the manufacture of polyurethane foam. It also can be used as antioxidants for synthetic rubber, polymers and oil derivatives, it can be used as purification agent for aminoformate catalysts. TBC is available in a form of a solid crystal and 85% solution in methanol or water. | ||
| SALES SPECIFICATION | ||
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SOLID |
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APPEARANCE |
White Solid Turning Light Brown | |
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PURITY |
98.5% min |
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WATER |
0.2% max |
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| SPECIFIC GRAVITY |
1.05 - 1.07 |
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| BOLING POINT | 283 - 285 C | |
| MELTING POINT | 50 - 52 C | |
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85% IN WATER |
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APPEARANCE |
clear to yellow liquid |
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PURITY |
85.0% min |
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WATER |
Balance |
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| SPECIFIC GRAVITY |
1.06 - 1.07 |
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REFRACTIVE INDEX |
1.504 - 1.514 |
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85% IN METHANOL |
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PURITY |
85.0% min |
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METHANOL |
Balance |
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| SPECIFIC GRAVITY |
1.029 - 1.031 |
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| MELTING POINT |
10 - 12 C |
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| TRANSPORTATION | ||
| PACKING | 25kgs in bag , 200kgs in drum | |
| HAZARD CLASS | 6.1 (Packing Group: III) | |
| UN NO. | 2811 | |
| OTHER INFORMATION | ||
| European Hazard Symbols: XN, Risk Phrases: 21-36/38, Safety Phrases: 26-36/37/39 | ||
| GENERAL DESCRIPTION OF DIHYDROXYBENZENE | ||
| There are three isomeric compounds of dihydroxybenzene molecule structure, which all have traditional names respectively. The ortho (1,2) isomer is called catechol (Also known as catechin; pyrocatechol; pyrocatechuic acid), which forms clear crystals used as a photographic developer in solution and as a starting material to produce synthetic catecholamines which have important physiological effects as neurotransmitters and hormonesany (such as epinephrine, adrenaline, norepinephrine, and dopamine). The meta (1,3) isomer is resorcinol (also known as resorcin), which forms clear needle crystals used in the production of diazo dyes and plasticizers. It is produced by sulfonating benzene with fuming sulfuric acid and fusing the resulting benzenedisulfonic acid with caustic soda. Resorcinol is used in resins as an UV absorber. It is used in manufacturing fluorescent and leather dyes and adhesives. Reaction with formaldehyde produces resins (resorcinol formaldehyde resins) used to make rayon and nylon. It is used as a pharmaceutical to treat acne and other greasy skin conditions in combination with other acne treatments such as sulfur. It is used as an anti-dandruff agent in shampoo and sunscreen cosmetics. It is also used as a chemical intermediate to synthesis pharmaceuticals and other organic compounds. The para (1,4) isomer is hydroquinone (also known as quinol), which forms clear prisms used as a photographic reducer and developer (except in color film). It is formed in large quantities by chemical reduction of benzoquinone. This compound is a general-purpose inhibitor, stabilizer, antioxidant, and intermediate. One of the major uses for hydroquinone is an intermediate to make other inhibitors, stabilizers, antioxidants, agricultural chemicals, and dyes. | ||
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