Saturday, August 18, 2007

history of jurong island!

With its excellent geographic location on the world's busiest shipping routes, Singapore is home to the world's busiest container port. This bustle, however, largely bypassed a group of islands, namely Pulau Ayer Chawan, Pulau Ayer Merbau, Pulau Merlimau, Pulau Pesek, Pulau Pesek Kecil, Pulau Sakra and Pulau Seraya, just south of Singapore, off Jurong.

In the late 1960s and early 1970s, three oil companies decided to house their facilities on the islands - Esso in Pulau Ayer Chawan, Singapore Refinery Company in Pulau Merlimau and Mobil Oil in Pulau Pesek.

These three oil companies became the pioneers of Singapore's petroleum industry. In the 1980s, when the Singapore Government identified chemicals as a sector that could contribute significantly to the nation's economic growth, it became the natural choice to develop these islands into a petrochemicals hub.


In 1991, JTC was appointed the agent for the development of the Jurong Island project. Based on the needs and feedback from the industrialists, JTC planned and coordinated with the various government agencies in delivering the necessary infrastructure and services to the island, namely through the development of roads, drains, utilities and others.

Today, Jurong Island is home to over 88 leading petroleum, petrochemical, specialty chemical and supporting companies with more than S$24billion in fixed assets investment on Jurong Island. Industry luminaries such as ExxonMobil and Shell have already established a strong presence on Jurong Island and are poised to reap the benefits of comprehensive infrastructure and production synergies from this unique cluster development.

mitsui chemicals!

Chemicals Produced:
1. Phenols
2. Bis-phenols

These are only a few of the many chemicals that Mitsui Chemicals produce. Their wide range of products includes chemicals like acetone, urea and ammonia. These chemicals are then used to either feed other chemical plants or sold to other companies who need them.

products of mitsui chemicals!

1. phenols

By the cumene process or the Raschig process, phenols can be made from the partial oxidation of benzene of benzoic acid. It can also be made from coal oxidation.

Phenol has antiseptic properties, but continual exposure to phenols caused skin irritation, which is why it is not used as an antiseptic anymore. It is also used to produce drugs like aspirin.

Phenol from Mitsui’s phenol plant is used to feed its bis-phenol plant, as well as supply another company, Asahi Kasei and Mitsubishi Gas Chemical’s polyphenylene ether (PPE) complex.


2. bisphenols

Bis-phenols can be made by reacting two equivalents of phenol with one equivalent of acetone.

It is used in polycarbonate plastic as a primary monomer, and in PVC as a polymerisation inhibitor. It is widely used in many consumer products, like sunglasses, CDs, shatter-resistant baby bottles as well as the inner coating of canned food.

The bis-phenol produced by Mitsui Chemicals is supplied to Teijin Polycarbonate.
Phenols are a class of chemical compounds consisting of a hydroxyl group (-O H) attached to an aromatic hydrocarbon group.

Phenols are made by the Cumene Process. The Cumene Process is a process used industrially for converting two cheap starting materials, benzene and propylene, into two more valuable ones, phenol and acetone.

In the process, benzene and propylene are first compressed to a pressure of 30atm at 250°C. Cumene is formed in this process. Cumene is then oxidized with a radical initiator. This removes the tertiary benzylic hydrogen from cumene, forming cumene radical. The cumene radical then bonds with an oxygen molecule, forming cumene hydroperoxide which is kept at a pressure of 5atm to ensure that the peroxide is kept in a liquid state. When Cumene hydroperoxide is hydrolysed in an acidic medium, phenol and acetone is finally formed.

Phenols exist as a whilte crystalline solid with a sweet-tar-odour. It’s chemical formula is C6H5OH . It has antiseptic properties, however it causes immediate white blistering when it comes into contact with skin. Concentrated or pure phenol causes impairment of the central nervous system, liver and kidney damage, and severe irritation of eyes, and skin.

During the Second World War, phenol was used by the Nazis as a means of rapid execution. Phenol injections were adminstered to induce nearly instant death. In the late nineteenth century and twentieth century, phenol was used as an antiseptic or used to manufacture anesthetics. However, as phenol caused severe skin irritation, it was soon substituted with other chemicals.

Today, phenol is used in the production of drugs such as aspirin, and in weed killers.

bisphenols!

Bisphenol is a chemical compound. It is made up of two phenol functional groups. They belong to the same class and phenols. Its chemical formula is C15H16O2.


Bisphenols are manufactured by reacting acetone with twice the amount of phenol. The liquid bisphenol obtained and a phenol is filtered through a metal filter with the filtration grade of 1.0 mu.m or less. Bisphenol which does not contain fine particles of impurities is then obtained.

Bisphenols exist as a hard solid at room temperature. It’s melting and boiling points are 157 °C and 220 °C respectively. Bisphenols are generally harmless because they have very high melting points and are not violate at room temperatures. Because of these attributes, bisphenols are used as chemical building blocks in the manufacturing polycarbonate plastics and epoxy resins.


Polycarbonate plastic is a lightweight but tough plastic with high heat resistance and high electrical resistance. It is often used in place of glass for a significant safety advantage. It is used in the manufacturing of many of our common products such as spectacles lenses, reusable food and drink containers, bullet-proof shields, bicycle helmets, electronic equipments, CDs and VCDS, and many other products.


Epoxy resins are materials used to line metal cans to protect food and beverages from contamination. They are also used in protective coatings.

credits!

http://www.mitsui-chem.co.jp/e/
http://www.edb.gov.sg/edb/sg/en_uk/index/news_room/news/2003/mitsui_chemical_opens.html
http://en.wikipedia.org/wiki/Main_Page
http://www.bisphenol-a.org/about/index.html
http://www.bisphenol-a.org/human/occsafety.html
http://www.chemguide.co.uk/organicprops/phenol/background.html
http://www.chempensoftware.com/reactions/RXN319.htm
http://www.osha-slc.gov/SLTC/healthguidelines/phenol/index.html
http://www.bisphenol-a.org/sixty-minutes2a.html
http://www.freepatentsonline.com/6008315.html
http://www.jtc.gov.sg/