Amine value and equivalent weight
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Where UTS is the ultimate tensile strength in ksi and h is the strip thickness in inches. A CE value of 0.3 or less is considered safe. A special carbon equivalent was developed by Yurioka, which could determine the critical time in seconds Δt 8-5 for the formation of martensitic in the Heat Affected Zone (HAZ) in low-carbon alloy steels.
The LD 50 values for white rats for a single oral dose are 1.2, 1.4, and 2.5 g/kg body weight for EDA, DETA, and TETA respectively. There is currently an OSHA PEL of 10 ppm for EDA. There have been no PEL values yet set for DETA and TETA. ACGIH has adopted a TLV of 10 ppm for EDA and 1 ppm for DETA. 1.1.3. Workplace exposure