Part Number: IN1813 Page 5 of 11 Issue Date: 10/07/2023
Version No: 2.2 Print Date: 10/07/2023
Gadolinium(III) bromide hydrate
Ingredient Original IDLH Revised IDLH
Gadolinium(III) bromide
Not Available Not Available
hydrate
Occupational Exposure Banding
Ingredient Occupational Exposure Band Rating Occupational Exposure Band Limit
Gadolinium(III) bromide
E ≤ 0.01 mg/m³
hydrate
Notes: Occupational exposure banding is a process of assigning chemicals into specific categories or bands based on a chemical's
potency and the adverse health outcomes associated with exposure. The output of this process is an occupational exposure
band (OEB), which corresponds to a range of exposure concentrations that are expected to protect worker health.
Exposure controls
Engineering controls are used to remove a hazard or place a barrier between the worker and the hazard. Well-designed
engineering controls can be highly effective in protecting workers and will typically be independent of worker interactions to
provide this high level of protection.
The basic types of engineering controls are:
Process controls which involve changing the way a job activity or process is done to reduce the risk.
Enclosure and/or isolation of emission source which keeps a selected hazard "physically" away from the worker and ventilation
that strategically "adds" and "removes" air in the work environment. Ventilation can remove or dilute an air contaminant if
designed properly. The design of a ventilation system must match the particular process and chemical or contaminant in use.
Employers may need to use multiple types of controls to prevent employee overexposure.
Local exhaust ventilation is required where solids are handled as powders or crystals; even when particulates are relatively
large, a certain proportion will be powdered by mutual friction.
If in spite of local exhaust an adverse concentration of the substance in air could occur, respiratory protection should be
considered.
Such protection might consist of:
(a): particle dust respirators, if necessary, combined with an absorption cartridge;
(b): filter respirators with absorption cartridge or canister of the right type;
(c): fresh-air hoods or masks.
Air contaminants generated in the workplace possess varying "escape" velocities which, in turn, determine the "capture
velocities" of fresh circulating air required to effectively remove the contaminant.
Appropriate engineering Type of Contaminant: Air Speed:
controls direct spray, spray painting in shallow booths, drum filling, conveyer loading, crusher dusts, gas 1-2.5 m/s (200-500
discharge (active generation into zone of rapid air motion) f/min.)
grinding, abrasive blasting, tumbling, high speed wheel generated dusts (released at high initial 2.5-10 m/s (500-2000
velocity into zone of very high rapid air motion). f/min.)
Within each range the appropriate value depends on:
Lower end of the range Upper end of the range
1: Room air currents minimal or favourable to capture 1: Disturbing room air currents
2: Contaminants of low toxicity or of nuisance value only. 2: Contaminants of high toxicity
3: Intermittent, low production. 3: High production, heavy use
4: Large hood or large air mass in motion 4: Small hood-local control only
Simple theory shows that air velocity falls rapidly with distance away from the opening of a simple extraction pipe. Velocity
generally decreases with the square of distance from the extraction point (in simple cases). Therefore the air speed at the
extraction point should be adjusted, accordingly, after reference to distance from the contaminating source. The air velocity at the
extraction fan, for example, should be a minimum of 4-10 m/s (800-2000 f/min) for extraction of crusher dusts generated 2 metres
distant from the extraction point. Other mechanical considerations, producing performance deficits within the extraction
apparatus, make it essential that theoretical air velocities are multiplied by factors of 10 or more when extraction systems are
installed or used.
Individual protection
measures, such as
personal protective
equipment
Safety glasses with side shields.
Chemical goggles. [AS/NZS 1337.1, EN166 or national equivalent]
Contact lenses may pose a special hazard; soft contact lenses may absorb and concentrate irritants. A written policy
Eye and face protection document, describing the wearing of lenses or restrictions on use, should be created for each workplace or task. This should
include a review of lens absorption and adsorption for the class of chemicals in use and an account of injury experience.
Medical and first-aid personnel should be trained in their removal and suitable equipment should be readily available. In the