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Physical & Chemical properties

Melting point / freezing point

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Administrative data

Endpoint:
melting point/freezing point
Type of information:
migrated information: read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
other information
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: Secondary literature / handbook data

Data source

Referenceopen allclose all

Reference Type:
review article or handbook
Title:
Römpp Chemie Lexikon, 9th edition: Siliziumdioxid
Author:
Falbe J and Regitz M (eds.)
Year:
1995
Bibliographic source:
Georg Thieme Verlag Stuttgart, New York
Reference Type:
review article or handbook
Title:
Unnamed
Year:
1979
Reference Type:
review article or handbook
Title:
Unnamed
Year:
2001

Materials and methods

GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
Synthetic amorphous silicas:
CAS-No. 112945-52-5, CAS-Name: Silica, amorphous, fumed, crystalline-free;
CAS-No. 112926-00-8, CAS-Name: Silica gel, precipitated, crystalline-free.

Results and discussion

Melting / freezing pointopen allclose all
Melting / freezing pt.:
1 710 °C
Atm. press.:
1 013 hPa
Decomposition:
no
Sublimation:
no
Remarks on result:
other: NTIS 1979 / NIOSH 2001
Melting / freezing pt.:
3 110 °F
Atm. press.:
1 013 hPa
Decomposition:
no
Sublimation:
no
Remarks on result:
other: NIOSH 2001 (cited from HSDB 2008): = 1710 °C
Melting / freezing pt.:
>= 1 716 - <= 1 736 °C
Atm. press.:
1 033 hPa
Decomposition:
no
Sublimation:
no
Remarks on result:
other: Römpp 1995

Any other information on results incl. tables

MELTING POINT: 3110 deg F [NIOSH. NIOSH Pocket Guide to Chemical Hazards & Other Databases. U.S. Department of Health & Human Services, Public Health Service, Center for Disease Control & Prevention. DHHS (NIOSH) Publication No. 2001-145 (CD-ROM) August 2001., p. ]**PEER REVIEWED**

Reference:

Hazardous Substances Data Bank (HSDB),

a database of the National Library of Medicine's TOXNET system

(http://toxnet.nlm.nih.gov) on June 27, 2008.

Note: 3110 °F = 1710 °C

Applicant's summary and conclusion