According to the Chemical Data Guide,...

Question 1 / 2707066636ee728f7522a1c5173d2

Question 1 of 2707066636ee728f7522a1c5173d2

According to the Chemical Data Guide, propylene oxide is assigned a health hazard rating of 3,2,2. What does the last digit "2" of the rating mean?

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Question 1 of 27070

According to the Chemical Data Guide, propylene oxide is assigned a health hazard rating of 3,2,2. What does the last digit "2" of the rating mean?

🔍 Key Concepts

• Chemical Data Guide health hazard rating system and what each of the three digits represents • Difference between toxicity/poisoning by inhalation or ingestion vs. local irritation to skin and eyes • Relative severity levels often described as slight, moderate, severe

💭 Think About

• Identify which aspect of hazard (overall toxicity, vapor effects on breathing/eyes, or skin/eye contact effects) the last digit is meant to describe in this 3-digit system • Compare the wording in each choice and decide which one best matches a moderate level of a specific type of effect, not the most extreme effect • Ask yourself whether a rating of "2" is likely to indicate "slight," "moderate," or "severe" for that type of effect

✅ Before You Answer

• Verify what the third digit in the Chemical Data Guide health hazard code specifically refers to (e.g., skin/eye contact vs inhalation toxicity) • Check which options clearly describe systemic poisoning vs local irritation/burns • Eliminate any choice that sounds like a description of the most severe category (what you’d expect for a rating of 3 or higher, not 2)

Question 1 of 27070

According to the Chemical Data Guide, propylene oxide is assigned a health hazard rating of 3,2,2. What does the last digit "2" of the rating mean?

the chemical poison presents some hazard if it enters the body and typically has threshold limits of 100 to 500 ppm

chemical vapors will cause a slight smarting of the eyes or respiratory system if present in high concentrations

the chemical is severely hazardous, usually having threshold limits below 10 ppm

the chemical contains fairly severe skin irritants, causing second- and third-degree burns after a few minutes contact

Question 1 / 2707066636ee728f7522a1c5173d2

Question 1 of 2707066636ee728f7522a1c5173d2

According to the Chemical Data Guide, propylene oxide is assigned a health hazard rating of 3,2,2. What does the last digit "2" of the rating mean?

Back

Question 1 of 27070

According to the Chemical Data Guide, propylene oxide is assigned a health hazard rating of 3,2,2. What does the last digit "2" of the rating mean?