The ACGIH recently proposed altering their values for formaldehyde to a TLV – Threshold Limit Value of 0.1 ppm and a Short Term Exposure Limit of 0.3 ppm. The proposed values are based on upper respiratory tract and eye irritation.
The ACGIH reached their conclusion to protect against irritation by reasoning that protection against this endpoint would prevent other diseases such as cancer.
The NIC also proposes a notation of “A1-Confirmed Human Carcinogen” based on cancer of the nasopharynx. While malignancies of the lymphatic and hematopoietic system are presented in the draft documentation, they are not included in the TLV recommendation section.
ACGIH last made a change to the Threshold Limit Value (TLV) for formaldehyde in 1992. The final value was a ceiling concentration of 0.3 ppm. The chemical was also listed as a “suspected” carcinogen.
KCMA is a member of the Formaldehyde Panel at the American Chemistry Council. Several of their constituents have commented on the NIC, which were due May 31, 2016.