What discoloration occurs when formaldehyde reacts with hemoglobin in tissue?

The discoloration that occurs when formaldehyde reacts with hemoglobin in tissue is referred to as "formaldehyde grey." This phenomenon is associated with the formation of grey or greyish-brown color changes in the tissues due to the binding of formaldehyde with hemoglobin.

This reaction can occur during the embalming process when formaldehyde is used as a preservative. If tissues are not adequately cleared of blood or if there are certain conditions affecting the embalming process, the residual hemoglobin can react with the formaldehyde, resulting in this specific discoloration.

Understanding formaldehyde grey is critical for those in mortuary science, as it can impact the overall appearance of the body. Proper embalming techniques can help minimize or prevent this discoloration, ensuring a more natural and acceptable appearance for viewing. Other discoloration terms like yellowing, hemoglobin staining, and browning refer to different processes or chemical reactions that do not specifically pertain to the direct reaction between hemoglobin and formaldehyde in this context.