Melting point :-32 °C
Boiling point :188 °C(lit.)
Density :1.333 g/mL at 25 °C(lit.)
vapor density :4.3 (vs air)
vapor pressure :0.7 mm Hg ( 25 °C)
refractive index :n20/D 1.386(lit.)
Flash point :182 °F
storage temp. :2-8°C
solubility :ethanol: 0.26 g/mL, clear, colorless
form :Liquid
color :Clear colorless
Odor :Almost odorless
Water Solubility :2.8 g/100 mL (18 ºC)
Merck :13,3282
BRN :635994
Exposure limits :TLV/PEL-TWA skin 0.1 ppm (0.52 mg/m³ ) (ACGIH, OSHA, NIOSH) IDLH 10 ppm (NIOSH).
Dielectric constant :55.0（20℃）
Stability :Stable; combustible. Incompatible with strong oxidizing agents, strong bases including ammonia. Moisture-sensitive.
CAS DataBase Reference :77-78-1(CAS DataBase Reference)
IARC :2A (Vol. 4, Sup 7, 71) 1999
NIST Chemistry Reference :Sulfuric acid, dimethyl ester(77-78-1)
EPA Substance Registry System :Dimethyl sulfate (77-78-1)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H301 Toxic if swalloed Acute toxicity,oral Category 3 Danger P264, P270, P301+P310, P321, P330,P405, P501 H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501 H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501 H330 Fatal if inhaled Acute toxicity,inhalation Category 1, 2 Danger P260, P271, P284, P304+P340, P310,P320, P403+P233, P405, P501 H341 Suspected of causing genetic defects Germ cell mutagenicity Category 2 Warning P201,P202, P281, P308+P313, P405,P501 H350 May cause cancer Carcinogenicity Category 1A, 1B Danger
Precautionary statements:	P202 Do not handle until all safety precautions have been read and understood. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P280 Wear protective gloves/protective clothing/eye protection/face protection. P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.