Ethylenediamine

CAS number: 107–15–3

NIOSH REL: 10 ppm (25 mg/m³) TWA

Current OSHA PEL: 10 ppm (25 mg/m³) TWA

1989 OSHA PEL: Same as current PEL

1993-1994 ACGIH TLV: 10 ppm (25 mg/m³) TWA [skin]

Description of Substance: Colorless, viscous liquid with an ammonia-like odor.

LEL(@12 F): 2.5% (10% LEL(@12 F), 2,500 ppm)

Original (SCP) IDLH: 2,000 ppm

Basis for original (SCP) IDLH: The chosen IDLH is based on the statement by AIHA [1970] that an 8-hour exposure to 4,000 ppm killed 6 of 6 rats, but that an 8-hour exposure to 2,000 ppm killed 0 of 6 rats [Smyth et al. 1951]. Further support for the chosen IDLH is gained from the statement by UCC [1971] that humans will not stay in concentrations of 2,000 ppm.

Short-term exposure guidelines: None developed

ACUTE TOXICITY DATA

Lethal concentration data:

Species	Reference	LC50 (ppm)	LCLo (ppm)	Time	Adjusted 0.5-hr LC (CF)	Derived value
Rat	Smyth et a. 1951	LC100: 4,000	-----	8 hr	10,000 ppm (2.5)	1,000 ppm

Lethal dose data:

Species	Reference	Route	LD50 (mg/kg)	LDLo (mg/kg)	Adjusted LD	Derived value
Rat G. pig Rat	Izmerov et al. 1982 Smyth et al. 1941 Smyth et al. 1951	oral oral oral	500 470 1,160	----- ----- -----	1,400 ppm 1,316 ppm 3,248 ppm	140 ppm 132 ppm 325 ppm

Other animal data: It has been reported that rats have survived an 8-hour exposure to 2,000 ppm [Smyth et al. 1951].

Human data: It has been reported that workers will not stay in concentrations of 2,000 ppm [UCC 1971].

Revised IDLH: 1,000 ppm Basis for revised IDLH: The revised IDLH for ethylenediamine is 1,000 ppm based on acute inhalation toxicity data in animals [Smyth et al. 1951]. This may be a conservative value due to the lack of relevant acute toxicity data for workers exposed to concentrations between 1,000 and 2,000 ppm.

REFERENCES:

1. AIHA [1970]. Ethylene diamine. In: Hygienic guide series. Am Ind Hyg Assoc J 31:113-115.

2. Izmerov NF, Sanotsky IV, Sidorov KK [1982]. Toxicometric parameters of industrial toxic chemicals under single exposure. Moscow, Russia: Centre of International Projects, GKNT, p. 66.

3. Smyth HF, Seaton J, Fischer L [1941]. The single dose toxicity of some glycols and derivatives. J Ind Hyg Toxicol 23(6):259-268.

4. Smyth HF Jr, Carpenter CP, Weil CS [1951]. Range-finding toxicity data: list IV. AMA Arch Ind Hyg Occup Med 4:119-122.

5. UCC [1971]. Toxicology studies: ethylene diamine. New York, NY: Union Carbide Corporation.