Skin contact. A severe exposure can cause unconsciousness. The MCLG for toluene is 1,000 ppb (ppb = micrograms per liter or ug/l). Monographs on the Evaluation of the Carcinogenic Risk of Chemicals to Man. Toluene levels in brain and blood were linearly related to toluene levels in inhaled air after rats were exposed to 50, 100, 500, or 1000 ppm (189, 377, 1885, or 3770 mg/cu m) toluene for 3 hr. IARC. Side effects requiring immediate medical attention. These effects are seen most drastically in those who abuse toluene as a drug, often “huffed” from spray paints or computer dusters, but even unintentional exposure via inhalation or consuming … allergies; inflammation Toxicity usually starts at blood levels around 2.5mg/L. Eye contact. Can harm the nervous system. Inhalation: Can irritate the nose and throat. BHT (butylated hydroxytoluene) is a lab-made chemical that is added to foods as a preservative. Along with its needed effects, arsenic trioxide may cause some unwanted effects. Symptoms may include headache, nausea, dizziness, drowsiness and confusion. Although not all of these side effects may occur, if they do occur they may need medical attention. Levels of 50mg/L and above are often fatal but this also depends on the age, weight and health status of the person. Small amounts of toluene may have little to no noticeable effect. The EPA has also established a Maximum Contaminant Level (MCL) for toluene in public drinking water systems. The most common route of exposure is via inhalation. It can cause systemic toxicity by ingestion or inhalation and is slowly absorbed through the skin. Some people apply BHT directly to the skin for cold sores. Additionally, this substance has a compound effect in the body and its vital systems, due to the body’s inability to rapidly remove it through normal metabolic excretion. Toluene is irritating to the skin, eyes, and respiratory tract. Toluene as a Teratogen: The Fetal Solvent Syndrome. Health Effects. Chronic exposure to toluene can have serious side effects. People also use it as medicine. However, the effects of toluene on the fetuses of chronically abusing mothers also deserve mention. Possible Side Effects of Butylated hydroxytoluene E321. Approved by Dr. Becky Maes - Butylated hydroxytoluene (BHT) is bad for the human body because of its prevalence in everyday consumer goods. Toluene (C₆H₅CH₃) is a colorless liquid with a sweet, pungent odor. What are the potential health effects of toluene? BHT is used to treat genital herpes and acquired immunodeficiency syndrome ().. Main Routes of Exposure: Inhalation. Although Butylated hydroxytoluene E321 generally regarded as a very safe and effective supplement, there can be some minor side effects. Toluene is a colorless substance with a sweet odor. Check with your doctor or nurse immediately if any of the following side effects occur while taking arsenic trioxide: The side effects may: Possible short-term side effects. 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