Chemicals of Concern Not In DRAS Database

Chemical Specific Inputs for

1,2,4-Trimethylbenzene (95-63-6)

Parameter	Reference and Explanation	Value

	Chemical/Physical Properties

	MW (g/mole)	CRC Handbook (2008-2009)	120.191

Tm (K)	CRC Handbook (2008-2009)	229.38

Vp (atm)	Handbook of Physical Properties of Organic Chemicals. 1997. CRC
Press	2.76E-03

S (mg/l)	Handbook of Physical Properties of Organic Chemicals. 1997. CRC
Press	5.70E+01

H (atm•m3/mol)	Handbook of Physical Properties of Organic Chemicals.
1997. CRC Press	6.16E-03

Da (cm2/s)	Johnson & Ettinger (1991).  Model for Subsurface Vapor
Intrusion into Buildings. Chemical Properties Lookup Table	6.06E-02

Dw (cm2/s)	Johnson & Ettinger (1991).  Model for Subsurface Vapor
Intrusion into Buildings. Chemical Properties Lookup Table	7.92E-06

Kow (unitless)	KOWIN v. 1.67	3.36E+00

Koc (ml/g)	Johnson & Ettinger (1991).  Model for Subsurface Vapor
Intrusion into Buildings. Chemical Properties Lookup Table	1.35E+03

Kds (cm3/g)

ND

Kdsw (l/kg)

ND

	Dermal Exposure Factors

	Kp (cm/hr)

ND

t

ND

t*

ND

B

ND

	Biotransfer Factors for Animals

	BCFfish 

(l/kg FW tissue)

ND

BCFfish (l/kg FW)

ND



μg/l)

ND

	Dilution/Attenuation Factors

	DAF for LF	DRAS Value for Xylene	1.55E+01

DAF for SI	DRAS Value for Xylene	4.24E+00



Note:  NA = Not Applicable

           ND = No Data Available

