No other effects were noted. Methyl mercaptan is a sulfhydral compound produced from methanol and hydrogen sulfide. If no pulse is detected, provide CPR. Emergency personnel should avoid self- exposure to methyl mercaptan. Potential health effects: Long-term systemic effects Value: 0,08 mg/kg PNEC : Fresh water sediment This may result in respiratory depression. HAZARD SUMMARY * Ethyl Mercaptan can affect you when breathed in and ... New Jersey Department of Health and Senior Services, Ethyl Mercaptan has not been tested for its ability to affect reproduction. The mean odor threshold concentration was 9.9 × 10-4 ppm with a standard deviation of 7.2 × 10-4 ppm and a coefficient of variation of 0.72. 2. Other Long-Term Effects * Ethyl Mercaptan can irritate the lungs. Control parameters Sampling time Update Methyl Mercaptan 74-93-1 Methemoglobin: 1.5 % Hb (In blood) During or at the end of the shift 2010-03-01 Engineering measures Dermal/Eye Exposure: 1.

For each subject an odor recognition threshold was determined on the basis of three trials. Remove victims from exposure. Studies are presented to identify the possible biochemical basis of anesthesia-like effects of methanethiol and those features, which distinguish such effects from common anesthetics and may represent the basis of its toxicity. Repeated exposure may cause bronchitis to develop with cough, EXPOSURE & HEALTH EFFECTS; Routes of exposure The substance can be absorbed into the body by inhalation. Methyl mercaptan occurs naturally in a wide variety of vegetables (such as onions and garlic), in "sour" gas in West Texas oil fields, in coal tar and petroleum distillates. Evaluate vital signs including pulse and respiratory rate, and note any trauma. Effects of short-term exposure The substance is irritating to the eyes and respiratory tract. 4.


The substance may cause effects on the central nervous system.

Methanethiol (CH3SH) has been implicated in the pathogenesis of hepatic coma. Methyl Mercaptan 74-93-1 Immediately Dangerous to Life or Health Concentration Value 150 parts per million 1995-03-01 US Substance name CAS-No. Effects on children Sadly, children may suffer more severe symptoms from mercaptan exposure than adults, according to the CDC's Agency for Toxic Substances and Disease Registry. It is found as an emission from paper and pulp mills. If not breathing, provide artificial respiration. Wilby (1969) exposed 34 individuals to methyl mercaptan at 12 concentrations representing a 100-fold range.

RUSH to a health care facility. Compared to adults, children have a higher ratio of lung surface area to body weight, so they suffer more pronounced effects from similar levels of exposure.

Methyl mercaptan is reportedly similar in nature although little is known about its health effects. There was a case in which a worker was exposed to very high levels of the compound when he opened and cleaned tanks; he developed anemia, went into a coma, and died ~1 month later.


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