Shand Fly Ash (CAS 68131-74-8) - External Use Document

Hazard statements (CLP)

H314, H318, H335, H350, H372

Code

Statements

H314

Causes severe skin burns and eye damage

WHMIS Classification

Skin Corrosion 1A (see Note 1) H314 Eye Damage 1 (see Note 1) H318 Carcinogen 1A (see Note 2) H350 Specific Target Organ Toxicity Single Exposure 3 H335 Specific Target Organ Toxicity Repeated Exposure 1 (See Note 3) H372 Note 1: The skin and eye corrosion hazard classifications are based on the high (basic, alkaline) pH obtained in 20%, 10%, and 1% suspensions of fly ash in water. This may represent a very conservative approach to the classification of these hazards. No in vitro or in vivo data is available. Note 2: Fly ash, itself, is not a carcinogen. However, respirable crystalline silica in the form of quartz or cristobalite from occupational sources is listed by ACGIH, IARC, and NTP as a lung carcinogen or suspected carcinogen. There is limited evidence in experimental animals for the carcinogenicity of tridymite (IARC). The fly ash contains crystalline silica; however, the respirable portion of the crystalline silica has not been determined. The level of risk associated with crystalline silica which occurs along with (i.e., attached to, embedded in) other material in a fly ash particle is not well understood, but may be reduced compared to inhalation of particles composed of “pure” crystalline silica. Note 3: Prolonged exposure to respirable crystalline silica may cause silicosis, a lung disease, which may be disabling. The fly ash contains crystalline silica; however, the respirable portion of the crystalline silica has not been determined.

2.2 Label elements

GHS-CA labelling

Signal word

Danger

Hazard statements

H314 - Causes severe skin burns and eye damage. H335 - May cause respiratory irritation. H350 - May cause cancer. H372 - Causes damage to organs through prolonged or repeated exposure.

Precautionary statements

P201 - Obtain special instructions before use. P202 - Do not handle until all safety precautions have been read and understood. P260 - Do not breathe dust. P264 - Wash hands, forearms and face thoroughly after handling. P270 - Do not eat, drink or smoke when using this product P271 - Use only outdoors or in a well-ventilated area. P280 - Wear protective gloves/protective clothing/eye protection/face protection. 04/20/2020 P301 + P330 + P331 + P315 - IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. Get immediate medical advice/attention P302 + P335 + P352 + P310 - IF ON SKIN: Brush off loose particles from skin. Wash with plenty of water. Obtain medical attention immediately if any signs of chemical or thermal burns are noted / suspected P304 + P340 + P312 - IF INHALED: Remove person to fresh air and keep comfortable for breathing. Call a POISON CENTRE or doctor/physician if you feel unwell P305 + P351 + P338 + P315 - IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. GET IMMEDIATE MEDICAL ADVICE/ATTENTION P308+P313 - IF exposed or concerned: Get medical advice/attention. P310 - Immediately call a POISON CENTER or doctor. P363 - Wash contaminated clothing before reuse. P401 + P402 - Store in a secure, dry location P403+P233 - Store in a well-ventilated place. Keep container tightly closed. P405 - Store locked up. P501 - Dispose of contents/container to hazardous or special waste collection point, in accordance with local, regional, national and/or international regulation.

Other hazards which do not result in classification

Note that, to some extent, burns may be thermal as well as caustic due to the heat released by the reaction of ash components (e.g, available alkalinity, such as calcium oxide or calcium hydroxide) with moisture (e.g, eyes, mucus membranes, sweat). Titanium dioxide is classified by IARC as a Group 2B carcinogen (possibly carcinogenic to humans). NIOSH considers ultrafine (respiratory particles with a primary particle diameter of < 100 nm) titanium dioxide as a potential occupational carcinogen, but considers there to be insufficient data to similarly classify fine titanium dioxide. Exposure to titanium dioxide dust may lead to other lung effects – e.g., fibrosis. The titanium content in fly ash is reported as TiO2; this is a the standard convention for the reporting of Ti content in fly ash: the actual occurence of any discrete particles of TiO2 in the fly ash is unknown. Although it is a transient rather than inherent characteristic of the fly ash, note that fly ash withdrawn directly from an electrostatic precipitator (ESP) hopper, fly ash storage (sales) silo, or encountered elsewhere in – or recently exited from – other power plant process equipment may be very hot due to retained heat originating from the coal combustion process. Consequent to the loading of hot fly ash from a silo, fly ash transport trailers may contain, transport, and subsequently deliver hot ash. Temperatures may be high enough to cause serious burns and to damage materials or equipment that come into contact with the ash. Additionally, the chemical reactivity of the hot fly ash – for example, the reaction of alkaline ash constituents with water – may be greatly enhanced relative to that of the ash at ambient temperatures, potentially generating additional heat, even higher temperatures, and – in the case of contact with water – flashing some of the water to steam. Note that the hot fly ash (whether recently exited from the process or held in storage (sales) silos) may have had almost no opportunity* for the surfaces of the lime (CaO) particles to have undergone any reaction with atmospheric humidity and / or carbon dioxide (CO2). Thus, in addition to the increased rate of the CaO hydration reaction (due to the elevated ash temperature) – if the ash comes into contact with water – the lime particles may also have chemically unaltered surfaces, which may also make them more immediately reactive than their later cooled, “aged” state. (* In some cases, however, some of the fly ash may have had some contact with water via sprays in a downstream pollution-control process.). NOTE that, the practice of injecting limestone into the boiler furnace at Shand has stopped since January of 2018, and therefore this product does no longer contain an ENHANCED level of Available Lime as previously. Available lime as Ca(OH)2 (hydrated lime) for 6 samples collected in the month of April 2019 ranged from 0.3 - 0.8%. On request, SaskPower Power Contracts will provide additional information by calling 1- 800-667-8022 toll free (in Canada). 2.4.

Ingredient(s) with unknown acute toxicity

Not applicable