Specification

4
US. Workplace Environmental Exposure Level (WEEL) Guides
Components
Type
Value
Dimethyl Ether (CAS 115-10-6)
TWA
1800 mg/m3
1000 ppm
BIOLOGICAL LIMIT VALUES :
ACGIH Biological Exposure Indices
Components
Value
Determinant
Specimen
Sampling Time
Acetone (CAS 67-64-1)
50 mg/l
Acetone
Urine
*
n-Hexane (CAS 110-54-
3)
0.4 mg/l
2,5-Hexanedion,
without hydrolysi
Urine
*
* - For sampling details, please see the source document.
EXPSOURE GUIDELINES
US - California OELs - Skin designation
n-Hexane (CAS 110-54-3) Can be absorbed through the skin.
US ACGIH Threshold Limit Values - Skin designation
n-Hexane (CAS 110-54-3) Can be absorbed through the skin.
Appropriate Engineering Controls : Good general ventilation (typically 10 air changes per hour) should be used. Ventilation
rates should be matched to conditions. If applicable, use process enclosures, local
exhaust ventilation, or other engineering controls to maintain airborne levels below
recommended exposure limits. If exposure limits have not been established, maintain
airborne levels to an acceptable level. Eye wash facilities and emergency shower must be
available when handling this product.
Individual Protection M easures:
Eye/Face Protection :
Wear safety glasses with side shields (or goggles).
Hand Protection :
Wear appropriate chemical resistant gloves.
Skin protection
Skin Protection:
Wear appropriate chemical resistant clothing. Use of an impervious apron is
recommended.
Respiratory Protection:
If permissible levels are exceeded use NIOSH mechanical filter / organic vapor
cartridge or an
air-supplied respirator.
Thermal Hazards:
Wear appropriate thermal protective clothing, when necessary.
General Hygiene: When using, do not eat, drink or smoke. Always observe good personal hygiene
measures, such as washing after handling the material and before eating, drinking, and/or
smoking. Routinely wash work clothing and protective equipment to remove
contaminants.
SECTION 9: Physical and Chemical Properties
Appearance: Gas. Aerosol
Vapor Density: Not determined
Odor: Not determined
Relative Density: Not determined
Odor Threshold: Not determined
Solubility(ies): Insoluble in water
pH: Not determined
Partition Coefficient: Not determined
Melting Point: Not determined
Freezing Point: Not determined
Auto-ignition Temperature: Not determined
Flash Point: > 156° F
Decomposition Temperature: Not determined
Evaporation Rate: Not determined
Viscosity: Not determined
Flammability (Solid/Gas): 2.2% - 8.6%
Specific Gravity: 0.724
Upper/Lower Flammability: Not determined
Vapor Pressure: 62 psig @70F estimated
Boiling Point: 50° C (122° F)