Warning property

Health and Safety. Halosilane vapors react with moist air to produce the respective hydrohalogen acid mist. Federal standards have not set exposure to halosilanes, but it is generally beheved that there is no serious risk if vapor concentrations are maintained below a level that produces an irritating concentration of acid mist. The exposure threshold limit value (TLV) for HCl is 5 ppm, expressed as a ceiling limit. Because most people experience odor and irritation at or below 5 ppm, HCl is considered to have good warning properties. 

Cannot be used with ehemieals that do not provide adequate warning properties... 

Adequate warning properties This was not included in the final standard. OSHA feels the two major warning properties, odor and irritation, are unreliable or otherwise inappropriate to be used as primary indicators of sorbent exhaustion. 

Warning properties The physical and chemical characteristics of a substance that allow it to be tasted or smelled at unsafe concentration levels. 

The nature of the hazard considering its degree of toxicity and its warning properties. A release of carbon monoxide provides no warning while a release of some amine nornuilly provides a strong odor at concentrations well below hanuful levels. 

Insufficient warning properties. Lethal amounts can be absorbed without great discomfort... 

Carbamate nerve agents do not have good warning properties. They have no odor, and, other than causing miosis, aerosols do not irritate the eyes. Contact neither irritates the skin nor causes cutaneous injuries. 

Based on their chemical and physical properties, bicyclophosphates are not expected to have good warning properties. They are unlikely to have any significant odor or to cause any significant irritation of the eyes or skin. 

Arsine does not have good warning properties. Although it has a distinct odor, it is only detectable at levels higher than acceptable exposure limits. It does not irritate the eyes, respiratory system, or the skin. 

Use a self-contained breathing apparatus (SCBA). Air purifying respirators (APRs) are not recommended for use in an arsine atmosphere because of poor warning properties and the unknown effectiveness of sorbents used in the filters. 

Carbon monoxide blood agents do not have good warning properties. Carbon monoxide is odorless and colorless. Although exposure to metal carbonyl vapors can cause eye irritation,... 

As a class, pulmonary agents do not have good warning properties. However, halogens and some alkylating agents will produce eye and skin irritation at low levels. 

Irritating and lachrymatory agents have excellent warning properties. In general, they produce eye, respiratory, and/or skin irritation at concentrations well below lethal levels. 

In general, toxins do not have good warning properties. They are nonvolatile and do not have an odor. Although some toxins irritate the skin and eyes, in most cases they do not. Many neurotoxins will produce severe pain in contact with any abrasion or laceration. 

HFC-134a is a nonflammable, colorless gas or liquified gas with a faint ethereal odor. The odor, characterized as weak and nonirritating (Shulman and Sadove 1967), may not be noticeable for most individuals and thus will not serve as a warning property. The vapor is heavier than air and can displace air in confined spaces (ECETOC 1995). Additional chemical and physical properties are listed in Table 3-2. 

Toxicity is the ability of a substance to cause injury to biological tissue. The hazard or risk of a substance is the probability that it will cause injury in a given environment or situation. The hazard of a substance depends on several factors, including its toxicity how it is absorbed, metabolized, and excreted how rapidly it acts its warning properties and its potential for fire and explosion. 

The warning properties are thought to be adequate to prevent voluntary exposure to acutely dangerous concentrations but inadequate for chronic exposure. 

Although allyl chloride is detectable below 3 ppm, the warning properties are insufficient to prevent exposure to concentrations that may be hazardous with chronic exposure. ... 

Arsine is nonirritating with a garlic-like odor. Warning properties of exposure to hazardous concentrations are inadequate. ... 

The warning properties are inadequate to prevent overexposure. Although dioxane has a low odor threshold (3-6 ppm), it is not unpleasant and individuals acclimatize within a few minutes. ... 

The odor is detectable below 1 ppm and should serve as a good warning property. ... 

Warning properties are good, and most people can detect 5 ppm. ... 

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