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Environmental fate & pathways

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Probable Routes of Human Exposure:

 

This substance (Sodium Dodecylbenzene Sulfonate (CAS# 25155-30-0)) is from the category of Linear Alkylbenzene Sulfonate (LAS).

 

The LAS molecule contains an aromatic ring sulfonated at the para position and attached to a linear alkyl chain at any position except the terminal carbons. The alkyl carbon chain typically has 10 to 14 carbon atoms and the linearity of the alkyl chains ranges from 87 to 98%. While commercial LAS consists of more than 20 individual components, the ratio of the various homologs and isomers, representing different alkyl chain lengths and aromatic ring positions along the linear alkyl chain, is relatively constant in currently produced products, with the weighted average carbon number of the alkyl chain based on production volume per region between 11.7-11.8.

LAS is the primary cleaning agent used in many laundry detergents and cleaners at concentrations up to 25 percent in consumer products, and up to 30 percent in commercial products, with the exception of one reported product at 45% percent in concentrated solid form that is mechanically dispensed into diluted solution for dishwashing.

 

Sodium dodecylbenzenesulfonate is one of the linear alkylbenzene sulfonate (LAS). The alkyl carbon chain typically has 10 to 14 carbon atoms and the linearity of the alkyl chains ranges from 87 to 98%. Weighted average carbon number of Sodium dodecylbenzenesulfonate is 11.7.

  

Dietary exposure to Sodium dodecylbenzenesulfonate can occur from its use in food contact sanitizing solutions as an active ingredient, and as an inert ingredient in food-use pesticide products applied to agricultural crops, and animals. There are no currently registered products used in residential settings where to Sodium dodecylbenzenesulfonate is considered to be an active ingredient.

However, to Sodium dodecylbenzenesulfonate is used as an inert ingredient in pesticide products used in residential settings, including hard surface and carpet cleaners, lawn products, and pet products.

Post application residential exposure can occur in children from hand-to-mouth incidental oral exposure from treated surfaces, and contacting pets treated with flea and tick products.

Occupational exposure to to Sodium dodecylbenzenesulfonate can occur frommixing/loading/applicationactivities in various use sites, including agricultural food handling, andcommercial/institutional/industrial premises.

 

 

Monotoring data

 

Monitoring is carried out for Sodium dodecylbenzenesulfonate CAS 25155-30-0

Occupational exposure to Sodium dodecylbenzenesulfonate may occur through oral and dermal contact with this compound at workplaces where Sodium dodecylbenzenesulfonate is produced or used (SRC). Monitoring data indicate that the general population may be exposed to Sodium dodecylbenzenesulfonate via ingestion of food and kindred product containing Sodium dodecylbenzenesulfonate (SRC).

 

NIOSH (NOES Survey 1981-1983) has statistically estimated that 977,517 workers (423,998 of these are female) are potentially exposed to Sodium dodecylbenzenesulfonate/ Benzenesulfonic acid, dodecyl-, sodium salt in the(1).

Occupational exposure to Sodium dodecylbenzenesulfonate/Benzenesulfonic acid, dodecyl-, sodium salt  may occur through oral and dermal contact with this compound at workplaces where Sodium dodecylbenzenesulfonate/ Benzenesulfonic acid, dodecyl-, sodium salt is produced or used (SRC). Monitoring data indicate that the general population may be exposed to Sodium dodecylbenzenesulfonate/ Benzenesulfonic acid, dodecyl-, sodium salt via ingestion of food and kindred product containing Sodium dodecylbenzenesulfonate (SRC).

 

Sodium dodecylbenzenesulfonate is manufactured from linear alkylbenzene (LAB) in self-contained, enclosed systems. LAB is produced by reacting paraffins with benzene and a catalyst and isolating the LAB by distillation. The LAB is then sulfonated, which in turn is then neutralized to sodium salts of LAS.

In the Sodium dodecylbenzenesulfonate reaction process, the measured concentrations of SO2, NaOH were 0.0026 and 0.0356 mg/m3, which were below the occupational exposure limit of 0.2 mg/m3 and 2 mg/m3, respectively. And the dust are emitted to atmosphere but the concentration of the substances were below 10% level of environmental emission standard (10 mg/m3).

Worker exposure is extremely limited and highly controlled through the use of engineering controls, personal protective equipment, and use of closed production systems.

There is no consumer exposure to Sodium dodecylbenzenesulfonate since it is not used in consumer products but aDietary exposure to Sodium dodecylbenzenesulfonate can occur from its use in food contactsanitizing solutions as an active ingredient, and as an inert ingredient in food-use pesticideproducts applied to agricultural crops, and animals. There are no currently registered products used in residential settings where to Sodium dodecylbenzenesulfonate is considered to be an active ingredient.

 

 

 

 

 

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