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Toxicological information

Exposure related observations in humans: other data

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Administrative data

Endpoint:
exposure-related observations in humans: other data
Adequacy of study:
supporting study
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
documentation insufficient for assessment

Data source

Reference
Reference Type:
publication
Title:
Nitrate WHO Food Additives Series
Author:
World Health Organization (WHO)
Year:
1996
Bibliographic source:
Nitrate WHO Food Additives Series; p. 325-60

Materials and methods

Type of study / information:
Biotransformation, distribution and excretion
Test guideline
Qualifier:
no guideline followed
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
Sodium nitrate
EC Number:
231-554-3
EC Name:
Sodium nitrate
Cas Number:
7631-99-4
Molecular formula:
HNO3.Na
IUPAC Name:
sodium nitrate
Test material form:
solid: crystalline
Details on test material:
- Physical appearance: not indicated
- Purity: not indicated
- Batch No.: not indicated
- Supplier: not indicated

Results and discussion

Results:
In healthy volunteers administered 10 mg sodium nitrate, the cumulative salivary nitrate excretion, over 24 h expressed as percentage of the ingested dose, was 28%. The plasma nitrate half-life was approximately 6.5 h and the volume of distribution was approximately 33 litres. 

Applicant's summary and conclusion

Conclusions:
The current study indicated a predominantly tubular excretion of nitrate.