Aluminium sulphate

Partition coefficient

Description of key information

Aluminium sulphate is inorganic substance and according “ANNEX VII - STANDARD INFORMATION REQUIREMENTS FOR SUBSTANCES MANUFACTURED OR IMPORTED IN QUANTITIES OF ONE TONNE OR MORE” the study does not need to be conducted if the substance is inorganic.
The estimated Partition coefficient n-octanol/water of -0.12  log Kow at 20 °C was measured by calculation from EPI SuiteTM v4.0 Program.This is Exposure Assessment Tools and Models  made from EPA (Environmental Protection Agency). 
The LogKow estimated for aluminium sulphate is -7.82  and this is out of range and by the reason that when released into water, the aluminum sulphate hydrolyses to form aluminum hydroxide and on this basis it is used the LogKow estimated for aluminium hydroxide ( -0.12).
Log Kow   =  -0.1210
Data interpretation : Log Kow   =  -0.12 = Low  bioacucmulation
 WARNING - The entered structure is an INORGANIC Compound.        
-Very few inorganic compounds were included in the training data 
-set for the methodology utilized in this program. Therefore,   inorganic compounds are outside the estimation domain. 

Key value for chemical safety assessment

Log Kow (Log Pow):

-0.12

at the temperature of:

20 °C

Additional information

Partition coefficient n-octanol/water

 

Aluminium sulphate is inorganic substance and according “ANNEX VII - STANDARD INFORMATION REQUIREMENTS FOR SUBSTANCES MANUFACTURED OR IMPORTED IN QUANTITIES OF ONE TONNE OR MORE ”the study does not need to be conducted if the substance is inorganic.

 The study does not need to be conducted if the substance is inorganic.

If the test cannot be performed (e.g. the substance decomposes, has a high surface activity, reacts violently during the performance of the test or does not dissolve in water or in octanol, or it is not possible to obtain a sufficiently pure substance), a calculated value for log P as well as details of the calculation method shall be provided.

The estimated Partition coefficient n-octanol/water of -0,12 log Kow at 20 °C was measured by calculation from EPI SuiteTM v4.0 Program.This is Exposure Assessment Tools and Models made from EPA (Environmental Protection Agency). 

 TheLogKow estimated for aluminium sulphate is -7.82 and this is out of range and by the reason that when released into water, the aluminum sulphate hydrolyses to form aluminum hydroxideand on this basis it is used theLogKow estimated for aluminium hydroxide (-0.12)

Estimation Program Interface (EPI) Suite

• The EPI (Estimation Programs Interface) Suite™ is a Windows^®-based suite of physical/chemical property and environmental fate estimation programs developed by the EPA’s Office of Pollution Prevention Toxics and Syracuse Research Corporation (SRC). 

EPI Suite™ uses a single input to run the following estimation programs: KOWWIN™, AOPWIN™, HENRYWIN™, MPBPWIN™, BIOWIN™, BioHCwin, KOCWIN™, WSKOWWIN™, WATERNT™, BCFBAF™, HYDROWIN™, KOAWIN and AEROWIN™, and the fate models WVOLWIN™, STPWIN™ and LEV3EPI™. ECOSAR™, which estimates ecotoxicity, is also included in EPI Suite™.
• EPI Suite™ is a screening-level tool and should not be used if acceptable measured values are available.

•KOWWIN™:Estimates the log octanol-water partition coefficient, log K_OW, of chemicals using an atom/fragment contribution method.

•AOPWIN™: Estimates the gas-phase reaction rate for the reaction between the most prevalent atmospheric oxidant, hydroxyl radicals, and a chemical. Gas-phase ozone radical reaction rates are also estimated for olefins and acetylenes. In addition, AOPWIN™ informs the user if nitrate radical reaction will be important. Atmospheric half-lives for each chemical are automatically calculated using assumed average hydroxyl radical and ozone concentrations.

•HENRYWIN™: Calculates the Henry’s Law constant (air/water partition coefficient) using both the group contribution and the bond contribution methods.

•MPBPWIN™: Melting point, boiling point, and vapor pressure of organic chemicals are estimated using a combination of techniques.  Included is the subcooled liquid vapor pressure, which is the vapor pressure a solid would have if it were liquid at room temperature.  It is important in fate modeling.

•BIOWIN™: Estimates aerobic and anaerobic biodegradability of organic chemicals using 7 different models. Two of these are the original Biodegradation Probability Program (BPP™). The seventh and newest model estimates anaerobic biodegradation potential.

•BioHCwin: Estimates biodegradation half-life for compounds containing only carbon and hydrogen (i.e. hydrocarbons).

•KOCWIN™: Formerly called PCKOCWIN™, this program estimates the organic carbon-normalized sorption coefficient for soil and sediment; i.e. K_OC. K_OCis estimated using two different models: the Sabljic molecular connectivity method with improved correction factors; and the traditional method based on log K_OW.

•WSKOWWIN™: Estimates an octanol-water partition coefficient using the KOWWIN™ program, then estimates a chemical’s water solubility from this value and applicable correction factors if any.

•WATERNT™: Estimates water solubility directly using a "fragment constant" method similar to that used in the KOWWIN™ program.

•BCFBAF™: Formerly called BCFWIN™, this program estimates fish bioconcentrationfactor and its logarithm using two different methods. The first is the traditional regression based on log K_OWplus any applicable correction factors, and is analogous to the WSKOWWIN™ method. The second is the Arnot-Gobas method, which calculates BCF from mechanistic first principles. BCFBAF also incorporates prediction of apparent metabolism half-life in fish, and estimates BCF and BAF for three trophic levels.

 
•HYDROWIN™: Estimates aqueous hydrolysis rate constants and half-lives for the following chemical classes: esters, carbamates, epoxides, halomethanes, selected alkyl halides, and phosphorus esters. Estimates rate constants for acid- and base-catalyzed hydrolysis, but with the exception of phosphorus esters, not neutral hydrolysis. In addition, HYDROWIN™ identifies a variety of chemical structure classes for which hydrolysis may be significant (e.g. carbamates) and gives relevant experimental data.

•KOAWIN: Estimates K_OA, the octanol/air partition coefficient, using the ratio of the octanol/water partition coefficient (K_OW) from KOWWIN™ and the dimensionless Henry's Law constant (K_AW) from HENRYWIN™. K_OAhas multiple uses in chemical assessment.

•AEROWIN™: Estimates the fraction of airborne substance sorbed to airborne particulates, i.e. the parameter phi (φ), using three different methods.  AEROWIN™ results are also displayed with AOPWIN™ output as an aid in interpretation of the latter.

•WVOLWIN™: Estimates the rate of volatilization of a chemical from rivers and lakes; and calculates the half-life for these two processes from their rates. The model makes certain default assumptions with respect to water body depth, wind velocity, etc.

•STPWIN™: Using several outputs from EPI Suite™, this program predicts the removal of a chemical in a typical activated sludge-based sewage treatment plant. Values are given for total removal and three processes that may contribute to removal: biodegradation, sorption to sludge, and air stripping. The program assumes a standard system design and set of default operating conditions.

•LEV3EPI™: This program contains a level III multimedia fugacity model and predicts partitioning of chemicals among air, soil, sediment, and water under steady state conditions for a default model "environment". Some (but not all) system default values can be changed by the user.

•ECOSAR™: Estimates the toxicity of chemicals discharged to water. ECOSAR™ predicts toxicity to fish, aquatic invertebrates and algae using an extensive set of structure-activity relationships (SARs). The program estimates a chemical's acute (short-term) toxicity and, when available, chronic (long-term or delayed) toxicity.