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How dangerous is a calibration gas cylinder?

Paul Fry

How dangerous is a calibration gas cylinder? What to be aware of and tips for handling.

Calibration gas cylinders are considered dangerous goods. But, how dangerous are they, really? After all, most gas calibration gases are classified as “non-toxic, non-flammable” gases.

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Topics: Gas Hazards & Dangerous Goods

Ammonia Fact Sheet

Water Security Agency

What is ammonia?

Ammonia (NH3) is a colorless, alkaline gas at ambient temperature and pressure, with a distinct pungent odor. Ammonia is very soluble in water and forms the ammonium cation (NH4+) on dissolution in water. In the pH range of most natural waters nitrogen exists principally as NH4+. Ammonia may be present in groundwater as a result of the degradation of naturally occurring organic matter or manmade sources. Natural ammonia levels in groundwater and surface water are usually below 0.2 mg/L, but many regions throughout the world have high levels of naturally occurring ammonia. Ammonia may also originate from nitrogen-fertilizer application, livestock operations, industrial processes, sewage infiltration, and cement mortar pipe lining. During 1998 to 2010, samples from 393 private water wells in Saskatchewan were analyzed for ammonia and it was detected in more than 87% of the samples with an average value of 1.19 mg/L.

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Topics: Gas Hazards & Dangerous Goods, Water & Wastewater Treatment

Hydrogen Safety in the Laboratory

Bruce Peat, Peak Scientific

Original blog written by Bruce Peat, Peak Scientific. Posted 02/03/16: http://www.peakscientific.com/blog/h2-safety/

The scientific community in China has been shocked by an accident in a laboratory at the prestigious Tsinghua University in Beijing, where it is believed that an explosion, and resulting fire, from bulk supplied hydrogen gas being used in the lab caused the death of a post doctorate researcher. 

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Topics: Gas Hazards & Dangerous Goods, Scientific & Laboratory

Occupational Hazards and Health Risks of Hydrogen Cyanide

Alex Singer

Hydrogen Cyanide (HCN)- CAS Number: 74-90-8

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Topics: Gas Hazards & Dangerous Goods

Occupational Health & Safety: Ammonia

Alex Singer

CAS Number: 7664-41-7

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Topics: Gas Hazards & Dangerous Goods

Risks and Hazards of Chlorine

Alex Singer

CAS no.  (Chemical Abstracts Service Registry Number): 7782-50-5

 

Description

Chlorine (dichlorine, diatomic chlorine, bertholite, sodium hypochlorite, molecular chlorine) is a greenish-yellow gas. It has a very pungent odour similar to the smell of bleach. Chlorine is mildly soluble in water, becoming hypochlorous acid and hypochloric acid.

As chlorine is heavier than air (approximately 2 ½ times), in areas with limited ventilation or air movement it will often accumulate and spread through low lying areas.

Liquid chlorine will evaporate into the air very quickly. Chlorine combines easily with all gases except for nitrogen and any of the rare gases (excluding xenon). Chlorine itself is not flammable but, being very reactive, it may explode or form explosive compounds when exposed to substances such as ammonia, hydrogen, natural gas or turpentine.

Often for shipping or storage, chlorine is cooled and pressurized turning into liquid chlorine.

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Topics: Gas Hazards & Dangerous Goods

Risks and Hazards of Hydrogen Sulphide

Alex Singer

Hydrogen sulphide (H2S), otherwise known as hydro-sulfuric acid, sulphuretted hydrogen, stink damp, dihydrogen monosulfide, sulfur hydride, hepatic gas, sewer gas, is a naturally occurring gas. A by-product of decomposition, it is found in natural gas, crude petroleum, volcanic gas and hot springs.

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Topics: Gas Hazards & Dangerous Goods

Shipping Empty Calibration Gas Cylinders? YOU are legally liable!

Greg Shires

Dangerous Goods.jpgTraditionally shipping dangerous goods has been managed by logistic experts who have the training and certification to transport dangerous goods by road, sea or air.

The regulations surrounding the shipping of dangerous goods will differ depending upon which goods they are, where you are shipping them, and the method of transport.

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Topics: Gas Hazards & Dangerous Goods