National Toxicology Program

National Toxicology Program

Nomination Summary for Water disinfection by-products FY97 (N97002)

Water disinfection by-products FY97

Specific Substances: Bromochloroacetic acid, Bromodichloroacetic Acid, Bromodichloromethane, Dibromoacetonitrile, Dichloroacetic acid, Sodium bromate

Nomination Date: 01/23/1997

Nominator: EPA

Rationale: The EPA is in the process of developing new drinking water regulations for water disinfection by-products (DBPs). The agency is prioritizing testing in the chronic bioassay for those DBPs of relatively high occurrence, and those that it believes may pose the greatest risk to human beings. The EPA plans to develop a chronic database on several DBP's, representing different chemical classes (e.g., trihalomethanes, haloacetic acids, haloacetonitriles).

NTP Principles: 1, 2, 6, 7

Status: Selected

Agents and Status

The following information relates to the specific agent and may include history from earlier or later nominations for this same agent.

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CASRN: 5589-96-8

Agent Name: Bromochloroacetic acid

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CASRN: 71133-14-7

Agent Name: Bromodichloroacetic Acid

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CASRN: 75-27-4

Agent Name: Bromodichloromethane

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CASRN: 3252-43-5

Agent Name: Dibromoacetonitrile

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CASRN: 79-43-6

Agent Name: Dichloroacetic acid

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CASRN: 7789-38-0

Agent Name: Sodium bromate

NTP is located at the National Institute of Environmental Health Sciences, part of the National Institutes of Health.