Dimethyl Disulfide (DMDS) An Effective Product In The Sulfiding Process

Product Identification:
Chemical Formula : C2H6S2
CAS# : 624-92-0
Molecular Weight : 94.2 g/mole

Physical and Chemical Properties:
Physical State                      : Light yellow liquid with stimulate odor
Density (20/40C)                : 1.062
Purity, wt%                         : 99.0 min.
Sulfur Content, wt%           : 68.1 ± 0.5
Moisture, %                        : 0.06 max.
Methyl Mercaptan, %          : 0.05 max.
Cloud Point, 0C                  : ≤ -5
Flash Point, 0C                   : 16
Boiling Point, 0C                : 108 – 1100C
Refractive Index                 : 1.526 (200C), 1.508 (300C)
Solubility                            : Slightly soluble in water - 2.500 ppm at 200C
Soluble in light alcohols, ethers, aliphatic and aromatic hydrocarbons

Dimethyl Disulfide is a stable pale yellow liquid which works as an effective product in the sulfiding process because of its high sulphur content. It is soon becoming the sulfiding industry’s sulfiding reagent of choice because it offers more sulphur per pound of reagent when compared to its nearest competitor Dimethyl Sulfide.

The uses of Dimethyl Disulfide in the industry are many and vaired according to the application it is used in. It is used in the preparation of Para (methylthio) phenol which is the title compound used in the production of various pesticides by reacting the dimethyl disulfide and chlorine with borontriflouride phenolate. Thiophene and dimethyl disulfide are blended with combustible hydrocarbon fuel gas to impart a gassy odor to the fuel gas. Dimethyl disulfide is used in each of these patents as a sulfiding reagent to control catalyst activity. The sulfide is used to either pretreat the catalyst or is fed in dilute amounts on to the catalyst bed with the reactants. Ortho (methylthio) phenol is produced from the reaction of dimethyl disulfide and phenol in the presence of aluminum phenoxide. Dimethyl disulfide is used as a sulfur donor in the presence of a variety of reagents to produce the intermediate methyl thionophosphoric acid dichlorides. Dimethyl disulfide is used to alpha substitute 2-methylfuran-acrolein to produce a food stuff used inconcentrations from 0.02 ppm up to 50 ppm. Dimethyl Disulfide also works as an effective product for operators in the petrochemicals industry who must protect their steam-cracking coils against the formation of coke and carbon monoxide.

Global Trust Enterprises FZCO is currently supplying world class Dimethyl Disulfide to many petrochemical plants in this region. They are a leading general trading company in Dubai who have been meeting the varied needs of their client in the steel, aluminium and petrochemical industries in the Middle East and the North Africa region. They are one of the largest suppliers in the region with a large global network sourcing chemicals, equipment, spares and industrial greases and lubricants from world renowned manufacturers offering them nothing but the best. They will even help out when their clients require savings in cost to make their end product competitive by working from concept to completion and giving them the best possible alternatives in supplies consisting of equivalent quality. To know more about Global Trust Enterprises, kindly visit them online at: www.globaltrustenterprises.com

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Normal Pentane And Its Industrial Uses

Product Identification:
Molecular Formula: C5H12
CAS: 109-66-0
Molecular Weight: 72.15 grams/mole

Physical and Chemical Properties:
Appearance                               :  Colorless liquid
Density (200C), g/cm3              : 0.623
Purity, wt%                               : 95.00 min.
Carbonyl, ppm                          : 2.0 max.
Bromine Index                          : 150 max.
Sulfur, ppm                               : 5.0 max.
Nitrogen, ppm                           : 2 max.
Suspended matter                      : none
Aromatics, ppm                         : 100 max.
Butane and lighter, wt%            : 1.0 max
Hexane and heavier, wt%         : 1.0 max

Physical and Chemical Properties may vary depending on customer’s requirement.


Normal unbranched pentane is an alkaline with five carbon atoms with the formula C5H12. Pentanes are commonly used as components of some fuels which are often employed as speciality solvents in the laboratory. Normal pentane is the most important isomer of pentane. In appearance is a colourless flammable, water-insoluble and a very volatile liquid obtained from petroleum by distillation.

In the industry pentane is used mainly as a primary blowing agent in the manufacturing of polystyrene foam. It is used because of its lower cost compared to other chemicals, low boiling point and relative safety when in use. Geothermal power stations have been using pentane in binary cycle systems wherein warm geothermal water is brought to the surface and passed through a heat exchanger containing pentane. Because of its much lower boiling point compared to water, the pentane heats up the binary fluid causing the turbines to spin. The advantage out here is that the pentane can be re-used once it condenses which is why it is pumped back into the system. Normal pentane is also used as a solvent and in varied industrial applications such as pharmaceutical, petrochemical, paints & coatings.

In terms of physical properties, pentane shows a boiling point in the range of 9 to 36 °C which is the result of its more branched isomers. Pentane isomers also burn with oxygen breaking down into carbon dioxide and water.

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Propionaldehyde And Its Uses In The Industry

Product Identification:
CAS No.: 123-38-6
IUPAC Name: Propanal
Molecular Formula: C3H6O
Molecular Weight: 58.08 gm/ mole

Physical and Chemical Properties:
Propionaldehyde, %                      : ≥ 99.7
Propionic Acid, %                         : ≤ 0.1
Water content, %                           : ≤ 0.1
Boiling Point, 0C                           : 48
Solidification point, 0C                  : -60
Density, g/cm3                               : 0.797
Flash Point, 0C                              : -30
Heat of Combustion, kJ/mol          : 1143.0
Ignition Point                                 : ≥ 190

Propionaldehyde is a colourless liquid with a fruity odour that can be slighty irritating. It is an organic compound (CH3CH2CHO) which is composed of a saturated 3-carbon aldehyde. Propionaldehyde is also an isomer of acetone which is industrially produced by the process of hydroformylation.  The hydroformylation is conducted with the combination of carbon monoxide and hydrogen along with ethylene with the help of a metal catalyst.

Propionaldehyde has been used in a condensation reaction with methanol which results in trimethylolethane which is an important intermediate for the production of alkyd resins. Condensation of propionaldehyde with tert-butylamine gives CH3CH2CH=N-t-Bu, a three-carbon building block used in organic synthesis. Deprotonation of this imine with LDA produces CH3CHLiCH=N-t-Bu, which in turn condenses with aldehydes.

Propionaldehyde in the chemical industry is used in the manufacture of plastics, in the synthesis of rubber chemicals, and as a disinfectant and preservative.

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A Brief On Triethylaluminium (TEA)

Product Identification:

CAS: 97-93-8

Molecular Formula: C6H15Al

Molecular Weight: 114.16 gm/mole

Physical and Chemical Properties:

Appearance                      : Clear, colorless liquid

Aluminum Content, %       : 23.0

Purity, %                               : 94.0

Tri-n-Propyl Aluminum,%    : 0.7

Tri-n-Butyl Aluminum, %     : 6

Tri-iso-Butyl Aluminum,%   : 1.5

Hydrides as AlH3                 : 1.0

Density (250C), kg/m3         : 835

Viscosity (250C), mPa.s       : 2.6

Triethylaluminium (TEA) is an organoaluminium compound, composed of a dimeric structure ( Al2Et6 ) which is bridged by a pair of ethyl groups and 2 five-coordinate carbon centres. In appearance TEA is a colourless volatile liquid which ignites immediately if exposed to air; which is why it is stored in stainless steel containers as a pure liquid or in the form of a solution as a hyrdrocarbon solvent such as heptanes. 

Its efficient synthesis makes triethylaluminium one of the most available organoaluminium compounds. TEA can also be generated from ethylaluminium sesquichloride (Al2Cl3Et3), which arises by treating aluminium powder with chloroethane. 

In terms of reactivity, triethylaluminium reacts violently with water to form a flammable ethane gas but at the same time has no significant reaction to commonly found materials.

Mainly used as a co-catalyst in the synthetic polymerization of HDPE and LLDPE, Triethylaluminium has been utilized in the industry as an intermediate in the production of fatty alcohols, which are later converted into detergents.  As a co-catalyst it forms an essential part of the catalyst system used as activator to accelerate the reaction which produces a polymer. Its highly pyrophoric properties make it a great pyrophoric agent which is the reason for it being used as a rocket engine ignitor. Its high pyrophoricity also makes it ideal as a fuel to be used to power rockets but only as a mixture with triethylborane.

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Diethylamine And Its Varied Uses In The Industry

Today amines are widely used in a number of different industries for multiple applications, such as production of dyes, manufacture of drugs and treatment of gas in natural gas refineries. Amines are organic compounds, which are derivatives of ammonia. Diethylamine is a secondary amine with the molecular structure CH3CH2NHCH2CH3. It is flammable and can be mixed with water and ethanol and is completely soluble in water. In appearance Diethylamine is a colorless liquid but it looks brown most of the time due to a number of impurities present in it. It has a boiling point of 55 degrees centigrade and a melting point of -50 degrees centigrade. It is unstable structure-wise and emits a strong odor similar to ammonia. Diethylamine is manufactured from bio-ethanol, which is a renewable resource.

The applications of Diethylamine are varied. Diethylamine is used in the production of pesticides. It is used in a mixture for the production of DEET which goes into the repellents that are found readily in supermarkets for general use. Diethylamine is also mixed with other chemicals to form Diethylaminoethanole, which is used mainly as a corrosion inhibitor in water treatment facilities as well as production of dyes, rubber, resins, and pharmaceuticals. Apart from the aforementioned, Diethylamine is also used in manufacture of basic chemicals and pharmaceuticals.

Owing to its multiple uses, the demand for amines has risen dramatically, which has also led to cheaper quality products penetrating the market. Global Trust Enterprises ensures that their customers get only the best quality amines for processing and further developing and delivering their high quality end products. Global Trust Enterprises is a general trading company in Dubai which caters to the primary needs of the steel and aluminum, petrochemical and oil and gas industries in the Middle East and the North Africa region. Global Trust Enterprises sources these products from globally renowned brands all over the world to ensure that their customers get the very best in quality to work with. They also offer customized solutions for customers who need competitively priced raw material to give them an edge over the competition with their finished product. Global Trust Enterprises FZCO currently supplies a variety of fine chemicals in the UAE, including Diethylamine to numerous petrochemical plants in the Middle East and the North Africa region. To know more about Global Trust Enterprises, kindly visit them online at: www.globaltrustenterprises.com

Product Identification:
Synonym:  Ethanamine, N-ethyl- ; diethylamine 98%; DEN
CAS No.: 109-89-7
Molecular Weight: 73.14 g/mol
Molecular Formula: C4H11N   Structural: (C2H5)2 NH


Physical and Chemical Properties:
Appearance                                :  Clear, colorless liquid
Odor                                          :  Ammonia odor
Solubility                                    :  Completely soluble in water
Specific Gravity                          :  0.707 at 200C/ 40C
pH                                             :  Strongly alkaline
% Volatiles by volume at 200C   :  100
Boiling Point                               :  550C
Melting Point                              :  -500C
Vapor density (Air=1)                 :  2.53
Vapor Pressure (mmHg)             :  400@380C                    
Evaporation Rate (BuAc=1)       :  16.9

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Calcium Stearate And Its Multiple Uses In The Industry

Calcium Stearate is a metallic salt produced by saponification reaction of Calcium Base and Stearic Acid. It has multiple applications in different production processes varying from lubricants right down to food products. Chemicals are often added to it to enhance or reduce its properties and then applied depending on the end product. It is commercially available in a liquid form with 50% dispersion or in a dry powdered form. Calcium Stearate is commonly used in the food and medical drugs in the form of a stabilizer or emulsifier depending on the product required and the form it needs to take up. Global Trust Enterprises is a general trading company in Dubai that manufacturers and supplies a variety of chemicals in the Middle East and North Africa Region. They provide high quality industrial chemicals including Calcium Stearate which are put to multiple uses as follows:

• Calcium Stearate being regarded harmless is generally considered fit for human consumption which is why one of the main uses is in the manufacture of tablets and capsules. In this process, it prevents chemicals from sticking to each other during the production and transportation phases. Calcium Stearate helps prevent chemicals from sticking to the processing equipment when the chemical powders are processed into solid tablets. The same principle applies to processing of food products like candies and other confectionary.
• The cement industry often uses Calcium Stearate in the liquid form to prevent secondary efflorescence. This helps in reducing the loss of the solvated salt into the atmosphere due to continuous exposure of cement to air in the atmosphere.
• The paper production line also utilizes Calcium Stearate to give paper that semi-matte gloss at a lower cost and also to extend the life of the paper.
• Calcium Stearate is used in the manufacture of PVC. It acts as an external lubricant in PVC processing. It promotes fusion and has a reasonable stability to heat.
• Calcium Stearate is used as thickening agent for lubricating grease.
• Applications in the personal care and pharmaceutical industry include tablet mold release, anti-tack agent, and gelling agent.

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Product Identification:
CAS No.                  : 1592-23
Molecular Weight      :  607.02 g/mole
Molecular Formula    :  C36H70CaO4


Physical and Chemical Properties:
Appearance             :  solid, powder
Colour                     :  white
pH                           :  7 – 9
Density                    :  1.095 g/cc
Solubility                 :  soluble in organic solvents // insoluble in water
Melting Point           :  145-1750C
Ignition Temperature:  4000C
Decomposition
Temperature            :  >3500C

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