LINEAR ALKYLBENZENE SULFONATE (LAS) - UNEP Chemicals

OECD SIDS LINEAR ALKYLBENZENE SULFONATE (LAS)
i: Default assumption
j: Surface area of the palm of one hand (EPA Exposure Factors Handbook)
Exposure to laundry and fabric conditioning product residual on clothing
[A x PR x PT x DA x CF] x PF
BW
Liquid
Laundry
Detergent
Dry Laundry
Detergent
Tablet
Laundry
Detergent
Fabric
conditioner
(dryersheet)
Amount Per Use (A) (g/day or g/wash) 121 a 121 a 135 a 3 a
Percent Retained on Clothing (PR) (%) 1% a 1% a 1% a 10% a
Percent Transferred from Clothing to Skin
(PT) (%)
1% a 1% a 1% a 1% a
Dermal Absorption (DA) (%) 100% b 100% b 100% b 100% b
Conversion Factor (CF) (1000 mg/g) 1000 1000 1000 1000
Female body weight (BW) (kg) 60 c 60 c 60 c 60 c
LAS concentration in product formulation
(PF) g (%)
1-25% d 5-25% d 5-25% d 0.1 – 0.5% d
References:
a: SDA Habit and Practice Survey
b: Default assumption
c: EU Technical Guidance Document, 1996
d: LAS Coalition Survey, Min-Max values
Exposure to face and hand soap residual after use
[FQ x A x PR x DA x CF] x PF
BW
Bar Soap
Bar Soap
Hand
Face
Frequency of Use (FQ) (use/day) 6 a 1 a
Amount Per Use (A) (g/use) 0.36 a 0.27 a
Percent Retained on Skin (PR) (%) 1% e 1% e
Dermal Absorption (DA) (%) 100% b 100% b
Conversion Factor (CF) (1000 mg/g) 1000 1000
Female body weight (BW) (kg) 60 c 60 c
LAS concentration in product formulation (PF) g (%) 1-5% d 1-5% d
References:
a: SDA Habit and Practice Survey
b: Default assumption
c: EU Technical Guidance Document, 1996
d: LAS Coalition Survey, Min-Max values
e: CTFA 2003 data
(3) Model Outputs
Exposure during the activity/use of diluted and undiluted laundry and dishwashing products and
diluted and undiluted hard surface cleaning products
Potential Dermal Exposure
(mg/kg/day) a
Laundry Pre-Treatment (diluted) 3.0E-3 to 6.0E-3
Neat Laundry Pre-Treatment (undiluted) 5.0E-3 to 1.0E-2
Hand-wash of Laundry (diluted) 4.7E-5 to 1.2E-3
UNEP PUBLICATIONS 88