What is the niosh recommended exposure limit for TCE?

NIOSH REL: 2 ppm 60-minute CEILING during usage as an anesthetic agent and 25 ppm TWA during all other exposures; NIOSH considers trichloroethylene to be a potential occupational carcinogen as defined by the OSHA carcinogen policy [29 CFR 1990].

What is the Cal OSHA permissible exposure limit for trichloroethylene?


Exposure Limits
OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak CAL/OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak
PEL-TWA 100 ppm 25 ppm (135 mg/m³)
PEL-STEL 100 ppm (537 mg/m³)
PEL-C 200 ppm; 300 ppm (Peak), for a single time period up to 5 min in any 2 hours 300 ppm

What is OSHA’s permissible exposure limit?

90 decibels
The current PEL for OSHA standards are based on a 5 decibel exchange rate. OSHA’s PEL for noise exposure is 90 decibels (dBA) for an 8-hour TWA. Levels of 90-140 dBA are included in the noise dose. PEL can also be expressed as 100 percent “dose” for noise exposure.

Where is trichloroethylene banned?

Minnesota recently became the first state to ban the dangerous chemical trichloroethylene (TCE). Not familiar with TCE? It’s a volatile organic compound that’s used in manufacturing processes and consumer products. Minnesota’s new law passed both chambers of its legislature by overwhelming majorities.

Is trichloroethylene harmful to the body?

TCE is carcinogenic to humans by all routes of exposure and poses a potential human health hazard for noncancer toxicity to the central nervous system, kidney, liver, immune system, male reproductive system, and the developing embryo/fetus.

What are the health effects of TCE?

Acute (short-term) and chronic (long-term) inhalation exposure to trichloroethylene can affect the human central nervous system (CNS), with symptoms such as dizziness, headaches, confusion, euphoria, facial numbness, and weakness.

Is methylene chloride a human carcinogen?

Because methylene chloride has been shown to induce increased numbers of benign and malignant neoplasms in rats and mice, it meets the criteria provided in the OSHA Cancer Policy for classifying a substance as a potential occupational carcinogen; therefore, NIOSH recommends that methylene chloride be considered a …

What is the PEL for arsenic?

0.01 mg/m3
► Exposure to Arsenic can cause weakness, poor appetite, nausea, vomiting, headache, and even death. powder form it can EXPLODE when exposed to heat, flame or hot surfaces. OSHA: The legal airborne permissible exposure limit (PEL) is 0.01 mg/m3 averaged over an 8-hour workshift.

How do you calculate exposure limits?

An example with values inserted would be if an employee was exposed to Substance A which has an eight-hour TWA of 100 ppm. The exposure is as follows: Two hours exposure at 150 ppm, two hours at 75 ppm and two hours at 50ppm (2×150 + 2×75 + 4×50)÷8 = 81.25 ppm .

Is trichloroethylene still used?

Trichloroethylene is a non-flammable chlorinated solvent used widely as a metal degreaser and electrical equipment cleaner. It is also used in adhesives, water-proofing agents, paint strippers and carpet shampoo. The major uses of trichloroethylene are: vapour degreasing and cold cleaning of manufactured metal parts.

Is TCE still used today?

Although some dry cleaners used TCE in the past, most dry cleaners now use tetrachloroethylene (perchloroethylene) or 1,1,1-trichloroethane. In the workplace, TCE is seldom present as a pure substance.

How is trichloroethylene ( TCE ) harmful to humans?

TCE can also damage the facial nerves, and it can cause skin rash. Heavy exposure can damage the liver and kidneys. TCE causes cancer in animals and may cause cancer in humans. HOW TO KNOW IF YOU ARE WORKING WITH TRICHLOROETHYLENE TCE is sometimes called by other names, such as trichloroethene, ethylene trichloride, or

What’s the maximum amount of trichloroethylene you can drink?

The EPA set a maximum contaminant goal (MCL) of 0.005 milligrams per liter (mg/L; 5 ppb) as a national primary drinking standard for trichloroethylene.

How is trichloroethylene used as a solvent?

Trichloroethylene is used as a solvent for cleaning metal parts. Exposure to very high concentrations of trichloroethylene can cause dizziness headaches, sleepiness, incoordination, confusion, nausea, unconsciousness, and even death.

What happens to the body when Trichloroethylene is inhaled?

Eating or breathing high levels of trichloroethylene may damage some of the nerves in the face. Exposure to high levels can also result in changes in the rhythm of the heartbeat, liver damage, and evidence of kidney damage.