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Helium cas no:7440-59-7

Synonyms: Atomichelium; Helium-4; o-Helium; p-Helium

Identification
NameHelium
CAS7440-59-7
SynonymsAtomichelium; Helium-4; o-Helium; p-Helium
EINECS(EC#)231-168-5
Molecular FormulaHe
Molecular Weight4.0026
Chemical Properties
AppearanceCOLOURLESS, ODOURLESS, REFRIGERATED, LIQUEFIED GAS
Globally Harmonized System of Classification adn Labelling of Chemicals(GHS)
Hazardclass2.2
Safety Data

Risk R9
Safety

A simple asphyxiant. A nonflammable gas. The safety issues for cryogenic helium are similar to those of liquid nitrogen; its extremely low temperatures can result in cold burns and the liquid to gas expansion ratio can cause explosions if no pressure-relief devices are installed. Containers of helium gas at 5 to 10 K should be handled as if they contain liquid helium due to the rapid and significant thermal expansion that occurs when helium gas at less than 10 K is warmed to room temperature.
Safety Statements: 9 
S9:Keep container in a well-ventilated place.
RIDADR: UN 1046 2.2
WGK Germany: 3
RTECS: MH6520000
F: 4.5-31


Toxicity
Vapors may cause dizziness or asphyxiation without warning. Vapors from liquefied gas are initially heavier than air and spread along ground.

supplier list

International Gases and Chemicals Ltd.
Tel:+44-0-1782-565556
Address: Unit 5 Speedwell Road Parkhouse East, Newcastle-under-Lyme Staffordshire ST5 7RG United Kingdom
Matheson Tri-Gas Inc.
Tel:+1 800-424-9300
Address: 166 Keystone Drive Montgomeryville, PA 18936
Yara International ASA
Tel:+47-24-15 70 00
Address: P.O. Box 2464, Solli N-0202 Oslo Norway
Praxair
Tel:
Address:
Air Products and Chemicals, Inc.
Tel:610-481-4911;
Address:
Shanghai Hynote Import & Export Co., Ltd.
Tel:+86-(379)-65867058
Address: R. 906A, Tomson Center, 228 Zhangyang Rd., Pudong, Shanghai 200120,
Air Liquide S.A.
Tel:+33-(149)-83-55-55
Address: 57 AV Carnot, Chambigny-Sur-Marne,Cedex F-94503,
AGA Gas GmbH Technische Gase
Tel:+49-(473)-4 910-1
Address: Gaensemarkt 50, Hamburg 36 D-2000,
Southern Air Products (Guangzhou) Ltd
Tel:+86-(20)-82265505
Address: 100 Junda Road,Eastern Section, GETDD, Guangzhou 510530,
Peenya Industrial Gases Pvt. Ltd.
Tel:+91-(80)-28362991
Address: Plot No. 313, 8th Cross, IV Phase, Peenya Indl. Area, Bangalore, Karnataka 560058,
Mysore Oxygen Co. Pvt. Ltd.
Tel:+91-(821)-2402528, 2402289
Address: Plot No. 86, Hootagalli Industrial Area, Mysore, Karnataka 571186,
Asiatic Industrial Gases Limited
Tel:+91-(40)-23095911
Address: No 2, Narsapur Road, Balanagar, Township Balanagar, Hyderabad, Andhra Pradesh 560038,
Govind Poy Oxygen Ltd.
Tel:+91-(0832)-2702599
Address: Govind Poy House, Rua do Padre, Miranda, Margao, Goa 403601,
Ellenbarrie Industrial Gases Ltd.
Tel:+91-(33)-22491922
Address: 3A, Ripon Street, Kolkata, West Bengal 700016,
P.T. Praxair Indonesia
Tel:+62-(21)-3902567
Address: Ji. M.HH. Thamrin Kav. 9, Jakarta 10350,

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