SPECTRUM

Chemical Fact Sheet

Chemical Abstract Number (CAS #) 606202
CASRN 606-20-2
Synonyms2,6-Dinitrotoluene
Benzene, 2-methyl-1,3-dinitro-
2,6-DNT
Analytical Methods EPA Method 609
EPA Method 625
EPA Method 8270
Molecular FormulaC7H6N2O4

Link to the National Library of Medicine's Hazardous Substances
Database for more details on this compound.

Use CHEM INT FOR TOLUENE-2,6-DIAMINE, A TOLUENE DIISOCYANATE INT; GELATINIZING & WATERPROOFING AGENT IN EXPLOSIVES Used in the synthesis of TNT, urethane polymers, flexible and rigid foams, surface coatings and dyes
Apparent Color RHOMBIC NEEDLES FROM ALCOHOL; Yellow to red solid
Odor Slight odor
Boiling Point 285 deg C
Melting Point 66 DEG C
Density 1.2833 @ 111 DEG C
Sensitivity Data Immediately irritating to the eye.
Environmental Impact Recent information indicated that two companies produced 2,6-dinitrotoluene (2,6-DNT) as a mixture with 2,4-DNT. No specific use information was found for 2,6-DNT; however, dinitrotoluenes are used in organic synthesis, dyes, and explosives and probably some of it is consumed in isocyanate production along with 2,4-DNT. Information on the routes and amounts of 2,6-DNT released to the environment was not found; however, 2,6-DNT may enter the environment from its production and use. If released to soil, 2,6-DNT is expected to biodegrade. It should be fairly mobile, based on experiments in sandy loam and sandy slit loam soil. If released to water, 2,6-DNT will readily biodegrade. Photooxidation should be rapid in surface layers of water. 2,6-DNT should not adsorb appreciably to sediments or suspended solids. Volatilization from water or soil will not be significant. In the atmosphere, 2,6-DNT will not react with photochemically produce hydroxyl radicals. Its half-life is estimated to be 47 days. Exposure to 2,6-DNT will primarily be occupational via dermal contact.
Environmental Fate TERRESTRIAL FATE: If released in soil, 2,6-DNT would be expected to readily biodegrade. 2,6-DNT's half-life in two soils was 73 and 92 days . The calculated soil adsorption coefficient (KOC = 204 ) for 2,6-dinitrotoluene (2,6-DNT) and an estimated log KOW of 1.72 indicates that 2,6-DNT is slightly mobile in soil(3,SRC). However, experimental data with 2,6-DNT in two soils indicates that its adsorptivity to soil is much lower . Due to its very low vapor pressure, volatilization from the soil surface should be negligible(5,SRC). Aromatic nitro compounds are not susceptible to hydrolysis . AQUATIC FATE: 2,6-DNT readily degrades in both river water and sea water and this would be expected to be the most significant fate process in the aquatic environment(6-8). The estimated log Koc for 2,6-DNT(1,3) and experimental adsorption data, suggests that 2,6-DNT will have a slight tendency to sorb to sediments, suspended solids and biota. Volatilization from rivers and lakes will not be significant based on calculations using an estimated Henry's Law constant(3-4). The half-life for 2,6-DNT in river water exposed to sunlight was 12 minutes and was determined to be an indirect photoreaction . Thus, photolysis may be a removal mechanism for 2,6-DNT in surface layers of water. ATMOSPHERIC FATE: 2,6-DNT degrades by reaction with photochemically produced hyroxyl radicals in the atmosphere. Its half-life is estimated to be 47 days(1,SRC).
Drinking Water Impact SEAWATER: 2,6-Dinitrotoluene was found in Dokai Bay, Japan at concentrations up to 14.8 ug/l . DRINKING WATER: 2,6-Dinitrotoluene was found in drinking water at an unspecified location at an unspecified concentration . SURFACE WATER: 2,6-Dinitrotoluene concns of 4.1 and 7.6 ug/L were detected in surface water samples collected from two brooks near Hirschagen/Waldhof, Germany in the vicinity of munitions manufacture during World War II ; the river into which the brooks feed (River Losse) had a concn of 0.1 ug/L ; two ponds in manufacture) had levles of 0.3 and 0.07 ug/L ; the ponds feed into the River Oder which had a level of 0.02 ug/L . EFFL: 2,6-Dinitrotoluene (2,6-DNT) concentration in raw wastewater from a textile plant was 50 mg/cu m and was an average of 4.3 mg/l in the wastewater from 2,4,6-trinitrotoluene production .

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