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4-tert-Butylcatechol, short for TBC, is an important fine chemical product. As polymerization inhibitor, it has quite well effect. It is widely used in the production process and polymer monomer storage and transportation process of olefin and polyolefine to avoid autohemagglutination of active olefin. It is a new-style polymerization inhibitor lately.
Chemical structural formula:
Properties:Appearance: white or canary crystal; molecular weight: 166.21; Density d25601.049;Dissolving in methanol, alcohol, benzene, toluol, acetone, etc. Slightly dissolving hot water, and it is easy to be moisture absorption and oxidation. The color will deepen after oxidation, but it will not influence using.
2,Quality index:
|
Item
|
Index |
Test method |
|
TBC content % |
≥99 |
Chromatography |
|
Ash % |
<0.2 |
Chemical method |
|
Melting point ℃ |
52-55 |
|
|
Appearance |
White crystal powder |
Eye measure |
3,Use:
TBC is widely used in the production process and polymer monomer storage and transportation process of olefin and polyolefine, such as ethylene production equipment, butadiene production equipment, styrene production equipment, etc.
Using method:Dissolving TBC in relevant solvent and then use it.
Polymer unit TBC standard addition 1х10-6
Styrene 10—50
Butadiene 50—100
Isoprene 150—300
Vinyltoluene 30—50
Divinylbenzene 1500—2000
Chloroprene 100—150
Acrylonitrile 50—100
4,Packing, storage, transportation and notice:
Packing: Steel drum lined with plastic foil and avoiding light during storage and transportation. Stored cool and lightless place, far from heat. Transport it as the rules of general chemicals.
Liquid TBC product description
We the professional manufacturer of TBC. Apart from producing solid TBC, we can customize liquid TBC for our customers with 3 configurations: 85% methanol solution, 45-50% alcohol solution and 92%liquid. After certification, it has obvious polymerization inhibiting effect, and it becomes high efficiency polymerization inhibitor.
The liquid TBC the derivative of Solid TBC with the same physical properties as solid TBC. (It can be customized.
Chemical name:4-tert-Butylcatechol
Structural formula:
White or canary crystal; Melting point: 52-55℃; Density d25601.049；Boiling point (normal pressure): 285℃; Ignition point: (ASTBD—92)168.2℃; Dissolving in water, acetone, methanol, aether, benzene, carbon tetrachloride, styrene and inorganic sterols. The reaction with iron or nickel sterol will make TBC black, but not decompose.
Quality standard:Executive Q/LYJH05—2005
|
Item |
85%methanol solution |
45-50%alcohol solution |
92% liquid |
|
Appearance |
Light yellow or black liquid |
Light yellow or black liquid |
Light yellow or black liquid |
|
Moisture% |
——— |
≤1.5 |
≤1.5 |
|
TBC content % |
84—86 |
45—50 |
92 |
|
Density 20℃g/cm3 |
1.01—1.06 |
0.8-1.00 |
1.0—1.070 |
|
Constitution |
TBC methanol |
TBC alcohol |
TBC solvent |
Use
Use:It is the high efficiency polymerization inhibitor during monomer distillation or storage or transportation of olefin. It is especially for the monomer polymerization inhibiting of styrene, butadiene and other olefins. It also can be used for chemical inhibitor, pesticide and stabilizer.
Using method:(1) It can be used in the schizolysis of ethane; using methanol for thinner, and dilute to the concentration of 50% and dosage 30ppm.
(2) Using styrene. Make the 85% methanol solution TBC into 2%wt solution by partial styrene.Packing,transportation，storage and notice
Packing:Plastic drum.
Transportation:Transport it as the transportation rules of general rules. Pay attention to fire-proof, explosive-proof, water-proof and pollution-proof.
Storage:Stored in the dry and ventilated warehouse.
Notice:Far from fire and heat. TBC has strong acrimony for skin, and humid TBC will burn skin. Touching eye, use a great deal of water to wash. Using powder extinguishing agent to put out the fire.
