Telephone coverage for hazard communication information

September 4, 1985

Mr. Ramon A. Napal
Vice President, Human Resources
Carlisle Syntech Systems
[Recipient address omitted]
Dear Mr. Napal:

Thank you for your letter of July 26 regarding the hazard Communication Standard (HCS) (29 CFR 1910.1200).

A telephone number is required on material safety data sheets, not labels. The purpose of the number is to ensure that someone can "provide additional information on the hazardous chemical and appropriate emergency procedures, if necessary." The standard does not explicitly state that the telephone number must be answered on a twenty-four hour basis. It appears that some judgment must be made based upon the probable use of your products, and the potential for the occurrence of emergency situations that would require additional information. Many firms that produce highly toxic materials that are likely to be used by other employers during three-shift operations do provide twenty-four hour coverage of their emergency telephone numbers. Producers of mildly toxic materials, which are used in operations that proceed during normal working hours, would be less likely to have such coverage.

Since the HCS is a performance standard, a determination as to what is appropriate in your situation must be made by your firm. We hope this information is helpful to you. If we can be of further assistance, please do not hesitate to contact us.

Sincerely,
Jennifer C. Silk
Health Scientist
Health Standards Programs

[Requester letter reproduced on OSHA page; omitted here.]