Interlaboratory Precision of Acute Toxicity Tests Using Reference Toxicant Formaldehyde

Determination of Acute Reference Exposure Levels for Airborne Toxicants March 1999 ACUTE TOXICITY SUMMARY FORMALDEHYDE

Description colorless gas Molecular formula CH2O Molecular weight 30.03 Density 0.815 g/L @ -20°C Boiling point -19.5°C Melting point -92°C Vapor pressure 3883 mm Hg @ 25°C (Howard, 1989) Flashpoint 300° C or 573°F Explosive limits upper = 73% lower = 7% Solubility soluble in water, alcohol, ether, other polar solvents Odor threshold 0.05-0.5 ppm Odor description very pungent odor; straw-like M...

Intra- and interlaboratory variability in acute toxicity tests with glochidia and juveniles of freshwater mussels (Unionidae).

The present study evaluated the performance and variability in acute toxicity tests with glochidia and newly transformed juvenile mussels using the standard methods outlined in American Society for Testing and Materials (ASTM). Multiple 48-h toxicity tests with glochidia and 96-h tests with juvenile mussels were conducted within a single laboratory and among five laboratories. All tests met the...

Investigation of acute dermal irritation/corrosion, acute inhalation toxicity and cytotoxicity tests for Nanobiocide®

Objective(s): Nanomaterials, especially silver Nanoparticles (Ag-NPs), are employed in an increasing number of commercial products. This has led to an ever growing exposure of human beings to this substance. The first purpose of the Nano Committee of Food and Drug Administration of The Islamic Republic of Iran (IFDA) is developing guidelines to assess and approve commerci...

Formaldehyde Reference Exposure Levels

The non-cancer adverse health effects of formaldehyde are largely a manifestation of its ability to irritate mucous membranes. As a result of its solubility in water and high reactivity, formaldehyde is efficiently absorbed into the mucus layers protecting the eyes and respiratory tract where it rapidly reacts, leading primarily to localized irritation. Acute high exposure may lead to eye, nose...

Pesticide acute toxicity reference values for birds.