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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
Peenya Industrial Gases Pvt. Ltd.
Tel:+91-(80)-28362991
Address: Plot No. 313, 8th Cross, IV Phase, Peenya Indl. Area, Bangalore, Karnataka 560058,
Govind Poy Oxygen Ltd.
Tel:+91-(0832)-2702599
Address: Govind Poy House, Rua do Padre, Miranda, Margao, Goa 403601,
Mitsubishi Chemical Corporation
Tel:+81-(3)-6414 3730
Address: 14-1 Shiba 4-chome, Minato-ku, Tokyo 108-0014,
BOC Gases Korea Co. Ltd.
Tel:+82-(2)-780 9331
Address: 10th Fl.,Samsung 10th Floor, Samsung Bldg., 36-1 Yoido-dong, Youngdeungpo-ku, Seoul 150-010,
Consolidated Industrial Gases Inc.
Tel:631-8251
Address: 30th Floor, Wynsum Corporate Plaza, Ortigas Center, Pasig City,
The BOC Group
Tel:+65-6866 3100
Address: 501 Orchard Road #10-01 Wheelock Place 238880,
Aims Oxygen Limited
Tel:
Address:
Scott Specialty Gases
Tel:+1-(877)-715-8651
Address: 6141 Easton Road Box 310, Plumsteadville, Pennsylvania 18949,
Sulfur Properties and Compounds
Tel:(915) 675-5311
Address: USA
Anqiu Hengan Gas Manufacture Factory
Tel:86-186-60286101
Address: Weifang
Anqiu Hengan Gas Manufacture Factory
Tel:86-186-60286101
Address: Weifang
Chengdu Qiyu Gas Co., Ltd.
Tel:86-28-83579197
Address: Room 40, 5th Building, No. 517, North Honghe Road,
Chengdu Qiyu Gas Co., Ltd.
Tel:86-28-83579197
Address: Room 40, 5th Building, No. 517, North Honghe Road,
Wuhan Golden Wing Industry & Trade Co.,Ltd.
Tel:86-27-82645123
Address: Room 1101,Building 2-2,DaJiang Yuan(North Garden), JiangDa Road,JiangAn District

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