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OSHA 1910.1044AppA

DBCP substance safety data

Subpart Z

24 Questions & Answers
10 Interpretations

Questions & Answers

Under 1910.1044 App A, what is the permissible airborne exposure limit for DBCP (time-weighted average)?

The permissible airborne exposure limit for DBCP is 1 part per billion (1 ppb) as an 8‑hour time‑weighted average (TWA). This numeric limit and its application are stated in Appendix A to 1910.1044 and implemented under the DBCP standard at 1910.1044.

Under 1910.1044 App A, is any skin or eye contact with DBCP allowed?

No — eye contact and skin contact with DBCP are prohibited. The Substance Safety Data Sheet for DBCP in Appendix A to 1910.1044 states that dermal exposure is not allowed and requires employers to provide impermeable protective clothing and eye protection where contact is possible.

Under 1910.1044 App A, what are the main routes by which employees can be exposed to DBCP?

Employees can be exposed to DBCP by inhalation (breathing), ingestion (swallowing), skin contact, and eye contact. These routes of entry are listed in Appendix A to 1910.1044.

Under 1910.1044 App A, what are the acute health effects you should watch for after DBCP exposure?

Acute exposure to DBCP can cause drowsiness, irritation of the eyes, nose, throat and skin, nausea, vomiting, and in high exposures may damage the lungs, liver, or kidneys. These acute effects are described in Appendix A to 1910.1044.

Under 1910.1044 App A, what chronic health effects are associated with repeated or prolonged DBCP exposure?

Prolonged or repeated DBCP exposure can cause sterility in humans and has been shown to produce cancer and sterility in laboratory animals; it is considered an increased cancer risk for humans. See the chronic effects in Appendix A to 1910.1044.

Under 1910.1044 App A, what should you do immediately if DBCP liquid or dust gets into your eyes?

Immediately wash your eyes with large amounts of water, lifting the upper and lower lids occasionally, and get medical attention right away; contact lenses should not be worn when working with DBCP. These emergency eye‑first‑aid steps are specified in Appendix A to 1910.1044.

Under 1910.1044 App A, what is the immediate first aid for skin contact with DBCP?

Immediately wash the affected skin with soap or mild detergent and water; remove and replace contaminated clothing and shoes, and seek medical attention if irritation persists. If DBCP penetrates clothing, remove the clothing at once. These steps are required in Appendix A to 1910.1044.

Under 1910.1044 App A, what should you do if someone breathes in large amounts of DBCP?

Move the exposed person to fresh air immediately, keep them warm and at rest, and get medical attention as soon as possible; if breathing has stopped, perform artificial respiration but do not use mouth‑to‑mouth. These breathing emergency procedures are listed in Appendix A to 1910.1044.

Under 1910.1044 App A, what actions are recommended if DBCP is swallowed?

If the person is conscious, give large amounts of water, attempt to induce vomiting by stimulating the back of the throat after the water is swallowed, and get medical attention immediately; do not make an unconscious person vomit. These ingestion first‑aid steps are in Appendix A to 1910.1044.

Under 1910.1044 App A, when are respirators required and what features must they have for DBCP work?

Respirators may be required in emergencies and while engineering controls are being implemented, and they must have a NIOSH approval label (or older Bureau of Mines label); they must fit snugly and not be loosened in required situations. The respirator guidance, including the labeling requirement and fit, is provided in Appendix A to 1910.1044 and applies alongside 1910.1044.

Under 1910.1044 App A, can you rely on your nose to detect DBCP when using a respirator?

No — DBCP does not have a detectable odor at levels near the permissible exposure limit; it is not detectable until roughly 1,000 times above the PEL, so odor is an unreliable indicator of protection. If you can smell DBCP while wearing a respirator, go immediately to fresh air. This limitation and the action to take are described in Appendix A to 1910.1044.

Under 1910.1044 App A, what kind of protective clothing must employers provide for workers handling DBCP?

Employers must provide impermeable work clothing for protection; standard rubber and neoprene protective clothing do not offer adequate protection and must not be relied on. Appendix A to 1910.1044 specifies these protective clothing requirements in 1910.1044 App A.

Under 1910.1044 App A, what eye protection is required when there is any possibility of DBCP contacting the eyes?

You must wear splash‑proof safety goggles wherever there is any possibility that DBCP liquid or dust could contact the eyes. This requirement is stated in Appendix A to 1910.1044.

Under 1910.1044 App A, how must DBCP be stored?

DBCP must be stored in tightly closed containers in a cool, well‑ventilated area. The storage precaution is specified in Appendix A to 1910.1044.

Under 1910.1044 App A, may workers wear potentially contaminated work clothes home?

No — if your work clothing may have become contaminated with DBCP, you must change into uncontaminated clothing before leaving the workplace; contaminated clothing must be removed and not worn again until the DBCP is removed. These rules are found in Appendix A to 1910.1044.

Under 1910.1044 App A, what hygiene rules apply in regulated areas where DBCP is used?

You must not keep food, beverages, cosmetics, or smoking materials in regulated areas, and you must wash your hands with soap or mild detergent and water before eating, smoking, or using toilet facilities; you must also remove protective clothing before leaving the regulated area. These hygiene and regulated‑area rules are set out in Appendix A to 1910.1044.

Under 1910.1044 App A, what must an employer tell employees about DBCP each year?

Each year the employer must inform employees of the information contained in the Substance Safety Data Sheet for DBCP and must instruct them in safe use, emergency procedures, and correct use of protective equipment. This annual information and training requirement is specified in Appendix A to 1910.1044 and supports compliance with 1910.1044.

Under 1910.1044 App A, does an employer have to determine whether employees are being exposed to DBCP and what rights do employees have during exposure monitoring?

Yes — the employer must determine whether employees are being exposed to DBCP, and employees or their representatives have the right to observe and record employee exposure measurements. Employers must inform employees of their exposure results. These monitoring and observation rights are described in Appendix A to 1910.1044.

Under 1910.1044 App A, how long must an employer keep exposure and medical records related to DBCP?

An employer must keep exposure and medical data for at least 40 years, or for the duration of employment plus 20 years, whichever is longer. This recordkeeping time frame is specified in Appendix A to 1910.1044.

Under 1910.1044 App A, who may obtain an employee's DBCP exposure and medical records and how?

An employee, the employee's physician, or another individual designated by the employee may obtain exposure and medical records upon the employee's written request; the employer is required to release those records. This right of access is described in Appendix A to 1910.1044.

Under 1910.1044 App A, what emergency rescue preparation is required for workplaces with DBCP?

Workers must notify someone and put established emergency rescue procedures into effect; they should know the locations of emergency rescue equipment before an incident occurs. These rescue‑procedure expectations are stated in Appendix A to 1910.1044.

Under 1910.1044 App A, how reliable is odor as a way to detect hazardous levels of DBCP in the air?

Odor is not a reliable indicator because DBCP generally cannot be smelled until levels are about 1,000 times higher than the permissible exposure limit; do not rely on odor to judge safety. This limitation is explained in Appendix A to 1910.1044.

Under 1910.1044 App A, what should you do if you experience breathing problems while wearing a respirator during DBCP work?

Tell your employer immediately if you experience difficulty breathing while wearing a respirator so they can take appropriate steps; if you can smell DBCP while wearing the respirator, leave to fresh air right away. These instructions are in Appendix A to 1910.1044.

Under 1910.1044 App A, what must be done with impermeable protective clothing that develops leaks while working with DBCP?

Impermeable clothing that develops leaks must be turned in for repair or replacement and must not be worn while leaking; contaminated clothing must be removed and cleaned before re‑use. See the protective clothing guidance in Appendix A to 1910.1044.