Friday, 21 June 2013

History of chemicals


History of Chemicals 


Chemistry is a branch of science that has been around for a long time. In fact, chemistry is known to date back to as far as the prehistoric times. Due to the amount of time chemistry takes up on the timeline, the science is split into four general chronological categories. The four categories are: prehistoric times - beginning of the Christian era (black magic), beginning of the Christian era - end of 17th century (alchemy), end of 17th century - mid 19th century (traditional chemistry) and mid 19th century - present (modern chemistry).

Chemical Weapons

Chemical Weapons: Major Developments in Their Use and Prohibition

1675The Strasbourg AgreementThe first international agreement limiting the use of chemical weapons, in this case, poison bullets.
1874The Brussels Convention on the Law and Customs of WarThe Brussels Convention prohibited the employment of poison or poisoned weapons, and the use of arms, projectiles or material to cause unnecessary suffering.
1899/1907Hague Peace ConferencesBans on use of poisoned weapons, ‘asphyxiating or deleterious gases’.
1915-1918Europe, World War I1.3 million casualties, 90,000 fatalities from chemical weapons; first large-scale use of CW, Ieper, Belgium.
1925Geneva ProtocolBan on CW use; but no prohibition on development, etc. - some states interpret as “no first use” - 132 parties by 2000.
1972Biological and Toxin Weapons ConventionComprehensive BW prohibition - 143 parties, 17 signatories by 2000; but no verification mechanism; commitment to negotiate on CW.
1980'sIran-Iraq WarIncluding use by Iraq of CW agents against its own civilian population, Halabja, 1988
1993Chemical Weapons ConventionSigning of CWC in Paris, January; Comprehensive bans on development, production, stockpiling and use of CW, with destruction timelines; Preparatory Commission for OPCW established.
1997OPCW, The HagueThe Chemical Weapons Convention enters into force for 87 States Parties; The OPCW commences its operations in The Hague; as of June 1997, inspections begin.
2007Tenth Anniversary of the OPCW182 Member States. 25,000 metric tons of chemical weapons (35% of the declared stockpiles worldwide) have been certified by the OPCW as destroyed. 3,000 inspections have been carried out by OPCW inspection teams at approximately 1,100 military and industrial sites in 80 countries.

Chemical Reaction images



Thursday, 20 June 2013

Famous chemicals company

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List of comany

 A-1 INSPECTION (S) PVT LTD
 ABLE RESOURCES ENGINEERING PVT LTD                                  
 BENTELR DISTRIBUTION LTD
CAPE EAST PTE LTD
CHEMICAL INDUSTRIES (F E) LTD
DAVY INTERNATIONAL LTD
EASTMAN CHEMICAL SINGAPORE LTD
ENERCON ENINERING LTD


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Types of chemicals