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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

 

Summary of Physico-chemical properties for p-toluic acid at 1-10T

 

IUCLID ref no

Study

Result

Notes / Source

4.1

Appearance; physical state; colour

Slightly yellowish crystalline powder at STP.

 

4.2

Melting / freezing point

179.6 °C at 1 atm.

OECD SIDS 2008

4.3

Boiling point

273.9°C at 101.3 hPa.

OECD SIDS 2008

4.4

Density

1.06 g/cm3

Merck SDS v5.1

4.5

Granulometry

The D50 was found to be 41.4 µm. (50% < 41.4 µm)

Bioscience Research Foundation, Tamilnadu, India. 2018

4.6

Vapour pressure

0.0000811 hPa at 25°C.

OECD SIDS 2008

4.7

Partition coefficient

2.44 (HPLC)

OECD SIDS 2008

4.8

Water solubility

349 mg/l at 20°C

OECD SIDS 2008

4.9

Solubility in organic solvents / fat solubility

n/a

 

4.10

Surface tension

Study not undertaken as this characteristic is not required.

Study waived

4.11

Flash point

Study not undertaken as substance is a solid.

Study waived

4.12

Auto-flammability

No ignition was observed up to 400°C

Bioscience Research Foundation, Tamilnadu, India. 2018

4.13

Flammability

Non-flammable.

Bioscience Research Foundation, Tamilnadu, India. 2018

4.14

Explosiveness

Substance does not contain explosive groups.

Study waived

4.15

Oxidising properties

Molecule does not contain oxidising groups.

Study waived

4.16

Oxidation / reduction potential

n/a

 

4.17

Stability in organic solvents and identity of relevant degradation products

n/a

 

4.18

Storage stability and reactivity towards container material

n/a

 

4.19

Stability: thermal, sunlight, metals

Degradation 50% after 4.2 days (sunlight)

OECD SIDS 2008

4.20

pH

Not required at this tonnage band.

 

4.21

Dissociation constant

pKa 4.22 at 25°C

OECD SIDS 2008

4.22

Viscosity

n/a

 

4.23

Additional physico-chemical information

n/a

 

 

Additional information