Registration Dossier

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Additional information

The results of the physico-chemical properties of the test substance (di C8-C10, branched, C9 rich, alkylnaphthalene sulphonic acid) are given in the table below.

Parameter

Guideline(s)

Result

Comment

Analytical method

Sanco 3029

successfully validated

Melting temperature

EC A.1 OECD 102 OPPTS 830.7200

-18°C (255K)

Glass transition

Boiling temperature

EC A.2 OECD 103 OPPTS 830.7220

no boiling temperature

reaction and/or decomposition of the test substance at > 50°C (> 323K) was observed

Density

EC A.3 OECD 109 OPPTS 830.7300

1.04

 

gas comparison pycnometer

Vapour pressure

EC A.4 OECD 104 OPPTS 830.7950

20°C 3.3 × 10-5Pa = 2.5 × 10-7mm Hg

25°C 6.1 × 10-5Pa = 4.5 × 10-7mm Hg

Modified Watson Correlation calculation method

Surface tension

EC A.5 OECD 115

not required

water solubility was < 1 mg/l

Water solubility

EC A.6 OECD 105 OPPTS 830.7840

0.229 mg/l

Column elution method

Partition coefficient

EC A.8 OECD 107

log Pow : > 6.6

at 20°C by the estimation method

Flammability (Flash-point)

ASTM D 93

159.9°C

Pensky-Martens closed cup method

Flammability (contact with water)

EC A.12 UN N.5

not highly flammable

statement

Pyrophoric properties

EC A.13 UN N.3

not pyrophoric

statement

Explosive properties

EC A.14 UN Test series 3 OPPTS 830.6316

not explosive

statement

Auto-ignition temperature

EC A.15 DIN 51794 IEC 79-4

415°C

at 1002.7 – 1003.6 hPa.

Oxidizing properties

EC A.21 UN O.2

not oxidizing

statement

Hydrolysis as a function of pH

EC C.7 OECD 111 OPPTS 835.2120

pH 4: t½ > 1 year

pH 7: t½ > 1 year

pH 9: t½ > 1 year

Hydrolysis as a function of pH

Adsorption coefficient

EC C.19 OECD 121

log Koc : < 1.26

HPLC method based on soil-adsorption-reference data