FORMALDEHYDE Guidelines

Topics: Formaldehyde, Occupational safety and health, Permissible exposure limit Pages: 16 (2885 words) Published: August 6, 2014
FORMALDEHYDE

GUIDELINES FOR SAFE WORKING PRACTICES

JANUARY 1995

INDEX

Page No.
1.

Usage .................................................................................

1

2.

Toxicity .................................................................... 1 / 2

3.

Human Health Hazard Data

.............................................

2/3

4.

First Aid Measures ..........................................................

3

5.

Safety Procedures ..........................................................

4

6.

Training ........................................................................

4

7.

Storage ...........................................................................

4

8.

Formaldehyde Usage - Hatchery .....................................

4/5

9.

Formaldehyde Usage - Breeding Farm ............................

5

10.

Construction of Fumigation Cabinets and Rooms ...........

5/6

11.

Specification of Safety Equipment ................................

6/7

12.

Use and Review of this Booklet .......................................

7/8

AUSTRALIAN CHICKEN MEAT FEDERATION
FORMALDEHYDE - GUIDELINES FOR SAFE WORKING PRACTICES

1.

USAGE

Formaldehyde is used in the poultry industry as an effective disinfectant on farms and in hatcheries and hatchery vehicles. It is most important in the reduction of contamination levels caused by bacteria, viruses and moulds at all levels in the production chain.

It is used in solution form as formalin, as a free gas, or in solid form as paraformaldehyde prills. Formalin is a colourless liquid with a very slightly acid pungent odour. It is used as an aqueous solution usually containing methanol to prevent polymerisation.

Formaldehyde gas is generated by any one of the following methods:(a)

By vaporisation from formaldehyde solution. Used when
fogging, spraying within a building, and in hatchers during
hatching process.

(b)

Given off from the chemical reaction of mixing
formaldehyde solution with potassium permanganate
(Condys crystals) in a metal container. Also known as
"bomb fumigation". Used for egg and equipment
fumigation, usually in a fumigation cabinet.

(c)

Given off when solid crystalline paraformaldehyde prills are heated in an electrical frypan or similar container to 21 8°C. Used for egg and equipment fumigation usually in a
fumigation cabinet.

(d)

Given off by very slow release over 2-3 week period when
the solid crystalline paraformaldehyde prills are used in nest litter, when 10 grams lasts 2-3 weeks.

2.

TOXICITY

Australian Exposure Standards (AES)1
The Australian Exposure Standard for formaldehyde is 1 ppm.
Formaldehyde is also a Category 2 carcinogen and a known sensitiser. The Exposure Standards (ES) are determined by the National Occupational Health and Safety Commission (NOHSC). NOHSC is commonly known as Worksafe Australia. These are published in the publication "Exposure Standards for Atmospheric Contaminants in the Occupational Environment".

1

National Occupational Health & Safety Commission “Exposure Standards for Atmospheric Contaminants in the Occupational Environment”
Formaldehyde – Guidelines for Safe Working Practices

Page 1

An exposure standard represents an airborne concentration of a particular substance in the workers' breathing zone, exposure to which, according to current knowledge, should not cause adverse effects nor cause undue discomfort to nearly all workers. There are generally three types of exposure standards.

ES-TWA - The Exposure Standard - Time Weighted Average, represents an average airborne concentration of a particular substance when calculated over a normal eight hour working day, for a 5 day working week. For formaldehyde this is 1 ppm.

ES-STEL - The Exposure Standard - Short Term Exposure Limit, represents a 15 minute TWA exposure which should not be exceeded at any time...
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