Helium

Formula : He
CAS : 7440-59-7 

 Messer Austria GmbH messergroup.com Austria

 Yateem Oxygen - Askar yateemoxygen.com Bahrain

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A noble gas with the atomic symbol He, atomic number 2, and atomic weight 4.003. It is a colorless, odorless, tasteless gas that is not combustible and does not support combustion. It was first detected in the sun and is now obtained from natural gas. Medically it is used as a diluent for other gases, being especially useful with oxygen in the treatment of certain cases of respiratory obstruction, and as a vehicle for general anesthetics.

Chitin unspecified

Formula : Unspecified
CAS : 1398-61-4 

 Marine Hydrocolloids https://meron.com/ India

 Suntze Chemical Co.Ltd. phuongduy.com.vn Vietnam

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Cellulose like biopolymer consisting predominantly of unbranched chains of beta-(1->4)-2-acetamido--2-deoxy-D-glucose. [Merck Index]

Argon, Elemental

Formula : Ar
CAS : 7440-37-1 

 Messer Austria GmbH messergroup.com Austria

 Yateem Oxygen - Askar yateemoxygen.com Bahrain

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A noble gas with the atomic symbol Ar, atomic number 18, and atomic weight 39.948. It is used in fluorescent tubes and wherever an inert atmosphere is desired and nitrogen cannot be used.