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Common Name: PHOSPHORIC ACID, DIMETHYL 4-(METHYLTHIO)- PHENYL ESTER HAZARD SUMMARY IDENTIFICATION REASON for CITATION HOW TO

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Common Name: PHOSPHORIC ACID, DIMETHYL 4-(METHYLTHIO)- PHENYL ESTER HAZARD SUMMARY IDENTIFICATION REASON for CITATION HOW TO Common Name: PHOSPHORIC ACID, DIMETHYL 4-(METHYLTHIO)- PHENYL ESTER CAS Number: 3254-63-5 RTK Substance number: 2674 DOT Number: UN 3018 Date: April 2002 ------------------------------------------------------------------------- ------------------------------------------------------------------------- HAZARD SUMMARY WORKPLACE EXPOSURE LIMITS * Phosphoric Acid, Dimethyl 4-(Methylthio)Phenyl Ester No occupational exposure limits have been established for can affect you when breathed in and by passing through Phosphoric Acid, Dimethyl 4-(Methylthio)Phenyl Ester. your skin. This does not mean that this substance is not harmful. Safe * Exposure to Phosphoric Acid, Dimethyl 4-(Methylthio)- work practices should always be followed. Phenyl Ester can cause rapid, severe, Organophosphate poisoning with headache, sweating, nausea and vomiting, * It should be recognized that Phosphoric Acid, Dimethyl diarrhea, loss of coordination, and death. 4-(Methylthio)Phenyl Ester can be absorbed through your skin, thereby increasing your exposure. IDENTIFICATION Phosphoric Acid, Dimethyl 4-(Methylthio)Phenyl Ester is a WAYS OF REDUCING EXPOSURE colorless liquid. It is used as a contact insecticide and * Where possible, enclose operations and use local exhaust acaricide (kills mites). ventilation at the site of chemical release. If local exhaust ventilation or enclosure is not used, respirators should be REASON FOR CITATION worn. * Phosphoric Acid, Dimethyl 4-(Methylthio)Phenyl Ester * Wear protective work clothing. is on the Hazardous Substance List because it is cited by * Wash thoroughly immediately after exposure to DOT and EPA. Phosphoric Acid, Dimethyl 4-(Methylthio)Phenyl Ester * Definitions are provided on page 5. and at the end of the workshift. * Post hazard and warning information in the work area. In HOW TO DETERMINE IF YOU ARE BEING addition, as part of an ongoing education and training EXPOSED effort, communicate all information on the health and safety hazards of Phosphoric Acid, Dimethyl The New Jersey Right to Know Act requires most employers 4-(Methylthio)Phenyl Ester to potentially exposed to label chemicals in the workplace and requires public workers. employers to provide their employees with information and training concerning chemical hazards and controls. The federal OSHA Hazard Communication Standard, 1910.1200, requires private employers to provide similar training and information to their employees. * Exposure to hazardous substances should be routinely evaluated. This may include collecting personal and area air samples. You can obtain copies of sampling results from your employer. You have a legal right to this information under OSHA 1910.1020. * If you think you are experiencing any work-related health problems, see a doctor trained to recognize occupational diseases. Take this Fact Sheet with you. PHOSPHORIC ACID, DIMETHYL 4-(METHYLTHIO)PHENYL ESTER page 2 of 6 This Fact Sheet is a summary source of information of all If symptoms develop or overexposure occurs, repeat the potential and most severe health hazards that may result from preceding tests as soon as possible and get an exam of the exposure. Duration of exposure, concentration of the substance nervous system. and other factors will affect your susceptibility to any of the potential effects described below. Any evaluation should include a careful history of past and --------------------------------------------------------------------------- present symptoms with an exam. Medical tests that look for damage already done are not a substitute for controlling HEALTH HAZARD INFORMATION exposure. Acute Health Effects Request copies of your medical testing. You have a legal right The following acute (short-term) health effects may occur to this information under OSHA 1910.1020. immediately or shortly after exposure to Phosphoric Acid, Dimethyl 4-(Methylthio)Phenyl Ester: Mixed Exposures * Persons exposed to other chemicals which affect body * Exposure to Phosphoric Acid, Dimethyl 4-(Methylthio)- cholinesterase (Organophosphates, Carbamates) may be at Phenyl Ester can cause rapid, severe, Organophosphate increased risk. poisoning with headache, dizziness, blurred vision, tightness in the chest, sweating, nausea and vomiting, WORKPLACE CONTROLS AND PRACTICES diarrhea, muscle twitching, loss of coordination, convulsions, coma and death. Unless a less toxic chemical can be substituted for a hazardous substance, ENGINEERING CONTROLS are the most Chronic Health Effects effective way of reducing exposure. The best protection is to The following chronic (long-term) health effects can occur at enclose operations and/or provide local exhaust ventilation at some time after exposure to Phosphoric Acid, Dimethyl 4- the site of chemical release. Isolating operations can also (Methylthio)Phenyl Ester and can last for months or years: reduce exposure. Using respirators or protective equipment is less effective than the controls mentioned above, but is Cancer Hazard sometimes necessary. * According to the information presently available to the New Jersey Department of Health and Senior Services, In evaluating the controls present in your workplace, consider: Phosphoric Acid, Dimethyl 4-(Methylthio)Phenyl Ester (1) how hazardous the substance is, (2) how much of the has not been tested for its ability to cause cancer in animals. substance is released into the workplace and (3) whether harmful skin or eye contact could occur. Special controls Reproductive Hazard should be in place for highly toxic chemicals or when * According to the information presently available to the New significant skin, eye, or breathing exposures are possible. Jersey Department of Health and Senior Services, Phosphoric Acid, Dimethyl 4-(Methylthio)Phenyl Ester In addition, the following control is recommended: has not been tested for its ability to affect reproduction. * Where possible, automatically pump liquid Phosphoric Other Long-Term Effects Acid, Dimethyl 4-(Methylthio)Phenyl Ester from drums * Phosphoric Acid, Dimethyl 4-(Methylthio)Phenyl Ester or other storage containers to process containers. may affect the nervous system. Good WORK PRACTICES can help to reduce hazardous exposures. The following work practices are recommended: MEDICAL * Workers whose clothing has been contaminated by Medical Testing Phosphoric Acid, Dimethyl 4-(Methylthio)Phenyl Ester Before employment and at regular times after that, the should change into clean clothing promptly. following are recommended: * Contaminated work clothes should be laundered by individuals who have been informed of the hazards of * Plasma and red blood cell cholinesterase levels (tests for the exposure to Phosphoric Acid, Dimethyl 4-(Methylthio)- enzyme poisoned by this chemical). If exposure stops, Phenyl Ester. plasma levels return to normal in 1-2 weeks while red blood * Eye wash fountains should be provided in the immediate cell levels may be reduced for 1-3 months. work area for emergency use. * When cholinesterase enzyme levels are reduced by 25% or * If there is the possibility of skin exposure, emergency more below pre-employment levels, risk of poisoning is shower facilities should be provided. increased, even if results are in lower ranges of "normal." Reassignment to work not involving Organophosphate or Carbamate pesticides is recommended until enzyme levels recover. PHOSPHORIC ACID, DIMETHYL 4-(METHYLTHIO)PHENYL ESTER page 3 of 6 * On skin contact with Phosphoric Acid, Dimethyl * Where the potential for overexposure exists, use a NIOSH 4-(Methylthio)Phenyl Ester, immediately wash or shower approved supplied-air respirator with a full facepiece to remove the chemical. At the end of the workshift, wash operated in a pressure-demand or other positive-pressure any areas of the body that may have contacted Phosphoric mode. For increased protection use in combination with an Acid, Dimethyl 4-(Methylthio)Phenyl Ester, whether or auxiliary self-contained breathing apparatus operated in a not known skin contact has occurred. pressure-demand or other positive-pressure mode. * Do not eat, smoke, or drink where Phosphoric Acid, Dimethyl 4-(Methylthio)Phenyl Ester is handled, QUESTIONS AND ANSWERS processed, or stored, since the chemical can be swallowed. Wash hands carefully before eating, drinking, applying Q: If I have acute health effects, will I later get chronic cosmetics, smoking, or using the toilet. health effects? A: Not always. Most chronic (long-term) effects result from PERSONAL PROTECTIVE EQUIPMENT repeated exposures to a chemical. WORKPLACE CONTROLS ARE BETTER THAN Q: Can I get long-term effects without ever having short- PERSONAL PROTECTIVE EQUIPMENT. However, for term effects? some jobs (such as outside work, confined space entry, jobs A: Yes, because long-term effects can occur from repeated done only once in a while, or jobs done while workplace exposures to a chemical at levels not high enough to make controls are being installed), personal protective equipment you immediately sick. may be appropriate. Q: What are my chances of getting sick when I have been OSHA 1910.132 requires employers to determine the exposed to chemicals? appropriate personal protective equipment for each hazard and A: The likelihood of becoming sick from chemicals is to train employees on how and when to use protective increased as the amount of exposure increases. This is equipment. determined by the length of time and the amount of material to which someone is exposed. The following recommendations are only guidelines and may not apply to every situation.
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