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Administrative data

Endpoint:
flash point of flammable liquids
Remarks:
solid
Type of information:
other: other information available, decomposition temperature available. Melting point and boiling point are not technically feasible to be determined.
Adequacy of study:
weight of evidence
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other:
Cross-referenceopen allclose all
Reason / purpose for cross-reference:
data waiving: supporting information
Reference
Endpoint:
melting point/freezing point
Remarks:
melting point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2020
Reliability:
1 (reliable without restriction)
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
GLP compliance:
not specified
Type of method:
thermal analysis
Key result
Decomposition:
yes
Decomp. temp.:
ca. 125 - ca. 400 °C
Remarks on result:
other: no determation of melting point possible. The substance decomposes.
Conclusions:
L-arginine phosphate monohydrate has been characterized by thermal analysis as advised in OECD Guideline 102, point 8, Table 1, aiming to determine its melting point and facilitate calculation of vapour pressure. The presented results clearly demonstrate that L-arginine phosphate monohydrate decomposes in three distinct stages between approximately 125 °C – 400 °C (see Figure 1 and Figure 2 in the report) rather than display specific melting points. Hence, a melting point cannot be determined due to decomposition.
Reason / purpose for cross-reference:
data waiving: supporting information
Reference
Endpoint:
boiling point
Data waiving:
study technically not feasible
Justification for data waiving:
the study does not need to be conducted because the substance is a solid which decomposes before boiling
Justification for type of information:
The substance decomposes above > 125 C-400 Celcius. Boiling does not occur before the decomposition process starts. Based on this, a boiling point for L-arginine phosphatecannot be defined or determined.
Key result
Decomposition:
yes
Decomp. temp.:
>= 125 °C
Remarks on result:
other: also melting point
Conclusions:
The substance decomposes above > 125 -400 Celcius. Boiling does not occur before the decomposition process starts. Based on this, a boiling point for L-arginine phosphate cannot be defined or determined.

Data source

Reference
Reference Type:
publication
Title:
Physical, chemical and optical properties of aqueous L-arginine phosphate (LAP) solution
Author:
YONGKEE KIM
Year:
2000
Bibliographic source:
J O U R N A L O F M A T E R I A L S S C I E N C E 3 5 (2 0 0 0 ) 873 – 880

Materials and methods

Test guideline
Qualifier:
no guideline available
Guideline:
other: justification
GLP compliance:
no
Type of method:
other: no data available
Flash point apparatus:
other: no data available

Test material

Constituent 1
Chemical structure
Reference substance name:
L-arginine phosphate
EC Number:
949-986-2
Cas Number:
49720-39-0
Molecular formula:
C6H19N4O7P
IUPAC Name:
L-arginine phosphate
Test material form:
solid: crystalline
Remarks:
particulate/powder

Results and discussion

Flash point
Key result
Remarks on result:
not determinable, other reason:
Remarks:
the substance decompose at melting point ca. 130 Celcius.

Applicant's summary and conclusion

Interpretation of results:
GHS criteria not met
Conclusions:
other information available, decomposition temperature available. Melting point and boiling point are not technically feasible to be determined.
The study does not need to be conducted because the substance is stable in contact with air at room temperature for prolonged periods of time (days) and does not react with water (e.g. the substance is manufactured with water or washes with water), the classification procedure does not need to be applied.
Not readily combustible or may cause or contribute to fire through friction.