Reaction products of cyclohexylamine and 4-alkylaniline and 1,1'-methanediylbis(4-isocyanatobenzene)

Melting point / freezing point

Link to relevant study record(s)

Reference

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

From 1996-01-04 to 1996-05-09

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: see 'Remark'

Remarks:

GLP study in accordance with recognised test guideline but: Lot/batch No.: not stated Expiration date of the lot/batch: not stated NOTE: study deemed acceptable because spectral data for A-3622 are available, covering before and after the test period - see section 1.4 Analytical Information.

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Deviations:

no

GLP compliance:

yes

Type of method:

capillary method

Specific details on test material used for the study:

- Substance type: Organic
- Physical state: Solid
- Composition of test material, percentage of components: relative proportions components 1, 2 and 3 are 100:60:40

Decomposition:

yes

Decomp. temp.:

ca. 200 - <= 320 °C

Remarks on result:

other: Darkening of the test samples without melting was observed at temperatures above approximately 200°C, initially from cream to brown in colour and then to very dark brown at approximately 320°C.

Mean values of 212°C and 287°C were obtained for 2-chloroanthraquinone and anthraquinone respectively. These were considered to be in satisfactory agreement with the respective certified values of 210°C and 285°C.

Conclusions:

The test item decomposes without melting at temperatures above 200°C (473K).

Executive summary:

The melting point determination was carried out by a capillary tube method using a Gallenkamp melting point apparatus to provide the heating. The test item decomposes without melting at temperatures above 200°C (473K).

Description of key information

The melting point determination was carried out by a capillary tube method using a Gallenkamp melting point apparatus to provide the heating. The test item decomposes without melting at temperatures above 200°C (473K).

Additional information

Duplicate melting point determinations were then performed on test item. Darkening of the test samples without melting was observed at temperatures above approximately 200ºC, initially from cream to brown in colour and then to very dark brown at approximately 320°C.