POTASSIUM NITRATE
Relevant Data
Food Additives Approved by WHO:
Food Additives Approved by European Union:
General Information
| Mainterm | POTASSIUM NITRATE |
| Doc Type | ASP |
| CAS Reg.No.(or other ID) | 7757-79-1 |
| Regnum |
181.33 181.34 172.160 |
From www.fda.gov
Computed Descriptors
Download SDF| 2D Structure | |
| CID | 24434 |
| IUPAC Name | potassium;nitrate |
| InChI | InChI=1S/K.NO3/c;2-1(3)4/q+1;-1 |
| InChI Key | FGIUAXJPYTZDNR-UHFFFAOYSA-N |
| Canonical SMILES | [N+](=O)([O-])[O-].[K+] |
| Molecular Formula | KNO3 |
| Wikipedia | potassium nitrate |
From Pubchem
Computed Properties
| Property Name | Property Value |
|---|---|
| Molecular Weight | 101.102 |
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 3 |
| Rotatable Bond Count | 0 |
| Complexity | 18.8 |
| CACTVS Substructure Key Fingerprint | A A A D c Q A C M A A A Q A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A E A A A A A A A A A A A A A A A A Q A A B A A A A A Q A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A = = |
| Topological Polar Surface Area | 62.9 |
| Monoisotopic Mass | 100.952 |
| Exact Mass | 100.952 |
| Compound Is Canonicalized | True |
| Formal Charge | 0 |
| Heavy Atom Count | 5 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Isotope Atom Count | 0 |
| Covalently-Bonded Unit Count | 2 |
From Pubchem
Food Additives Biosynthesis/Degradation
Toxicity Profile
| Route of Exposure | Oral ; inhalation |
|---|---|
| Mechanism of Toxicity | Nitrate's toxicity is a result of it's conversion to nitrite once in the body. Nitrite causes the autocatalytic oxidation of oxyhemoglobin to hydrogen peroxide and methemoglobin. This elevation of methemoglobin levels is a condition known as methemoglobinemia, and is characterized by tissue hypoxia, as methemoglobin cannot bind oxygen. |
| Metabolism | Intake of some amount of nitrates and nitrites is a normal part of the nitrogen cycle in humans. In vivo conversion of nitrates to nitrites can occur in the gastrointestional tract under the right conditions, significantly enhancing nitrates' toxic potency. The major metabolic pathway for nitrate is conversion to nitrite, and then to ammonia. Nitrites, nitrates, and their metabolites are excreted in the urine. |
| Toxicity Values | LD50: 1901 mg/kg (Oral, Rabbit) |
| Lethal Dose | None |
| Carcinogenicity (IARC Classification) | Ingested nitrate or nitrite under conditions that result in endogenous nitrosation is probably carcinogenic to humans (Group 2A). |
| Minimum Risk Level | None |
| Health Effects | Nitrate and nitrite poisoning causes methemoglobinemia. Nitrites may cause pregnancy complications and developmental effects. They may also be carcinogenic. (L1137) |
| Treatment | Methemoglobinemia can be treated with supplemental oxygen and methylene blue 1% solution administered intravenously slowly over five minutes followed by IV flush with normal saline. Methylene blue restores the iron in hemoglobin to its normal (reduced) oxygen-carrying state. |
| Reference |
|
From T3DB
Taxonomic Classification
| Kingdom | Inorganic compounds |
|---|---|
| Superclass | Mixed metal/non-metal compounds |
| Class | Alkali metal oxoanionic compounds |
| Subclass | Alkali metal nitrates |
| Intermediate Tree Nodes | Not available |
| Direct Parent | Alkali metal nitrates |
| Alternative Parents | |
| Molecular Framework | Not available |
| Substituents | Alkali metal nitrate - Inorganic oxide - Inorganic salt |
| Description | This compound belongs to the class of inorganic compounds known as alkali metal nitrates. These are inorganic compounds in which the largest oxoanion is nitrate, and in which the heaviest atom not in an oxoanion is an alkali metal. |
From ClassyFire
Targets
- General Function:
- Oxygen transporter activity
- Specific Function:
- Involved in oxygen transport from the lung to the various peripheral tissues.
- Gene Name:
- HBA1
- Uniprot ID:
- P69905
- Molecular Weight:
- 15257.405 Da
References
- Wikipedia. Methemoglobinemia. Last Updated 22 July 2009. : http://en.wikipedia.org/wiki/Methemoglobinemia [18203719 ]
- General Function:
- Oxygen transporter activity
- Specific Function:
- Involved in oxygen transport from the lung to the various peripheral tissues.LVV-hemorphin-7 potentiates the activity of bradykinin, causing a decrease in blood pressure.Spinorphin: functions as an endogenous inhibitor of enkephalin-degrading enzymes such as DPP3, and as a selective antagonist of the P2RX3 receptor which is involved in pain signaling, these properties implicate it as a regulator of pain and inflammation.
- Gene Name:
- HBB
- Uniprot ID:
- P68871
- Molecular Weight:
- 15998.34 Da
References
- Wikipedia. Methemoglobinemia. Last Updated 22 July 2009. : http://en.wikipedia.org/wiki/Methemoglobinemia [18203719 ]
- General Function:
- Oxygen transporter activity
- Specific Function:
- Involved in oxygen transport from the lung to the various peripheral tissues.
- Gene Name:
- HBD
- Uniprot ID:
- P02042
- Molecular Weight:
- 16055.41 Da
References
- Wikipedia. Methemoglobinemia. Last Updated 22 July 2009. : http://en.wikipedia.org/wiki/Methemoglobinemia [18203719 ]
- General Function:
- Oxygen transporter activity
- Specific Function:
- The epsilon chain is a beta-type chain of early mammalian embryonic hemoglobin.
- Gene Name:
- HBE1
- Uniprot ID:
- P02100
- Molecular Weight:
- 16202.71 Da
References
- Wikipedia. Methemoglobinemia. Last Updated 22 July 2009. : http://en.wikipedia.org/wiki/Methemoglobinemia [18203719 ]
- General Function:
- Oxygen transporter activity
- Specific Function:
- Gamma chains make up the fetal hemoglobin F, in combination with alpha chains.
- Gene Name:
- HBG1
- Uniprot ID:
- P69891
- Molecular Weight:
- 16140.37 Da
References
- Wikipedia. Methemoglobinemia. Last Updated 22 July 2009. : http://en.wikipedia.org/wiki/Methemoglobinemia [18203719 ]
- General Function:
- Gamma chains make up the fetal hemoglobin F, in combination with alpha chains.
- Specific Function:
- Heme binding
- Gene Name:
- HBG2
- Uniprot ID:
- P69892
- Molecular Weight:
- 16126.35 Da
References
- Wikipedia. Methemoglobinemia. Last Updated 22 July 2009. : http://en.wikipedia.org/wiki/Methemoglobinemia [18203719 ]
- General Function:
- Oxygen transporter activity
- Specific Function:
- The zeta chain is an alpha-type chain of mammalian embryonic hemoglobin.
- Gene Name:
- HBZ
- Uniprot ID:
- P02008
- Molecular Weight:
- 15636.845 Da
References
- Wikipedia. Methemoglobinemia. Last Updated 22 July 2009. : http://en.wikipedia.org/wiki/Methemoglobinemia [18203719 ]
- General Function:
- Voltage-gated potassium channel activity involved in ventricular cardiac muscle cell action potential repolarization
- Specific Function:
- Pore-forming (alpha) subunit of voltage-gated inwardly rectifying potassium channel. Channel properties are modulated by cAMP and subunit assembly. Mediates the rapidly activating component of the delayed rectifying potassium current in heart (IKr). Isoforms USO have no channel activity by themself, but modulates channel characteristics by forming heterotetramers with other isoforms which are retained intracellularly and undergo ubiquitin-dependent degradation.
- Gene Name:
- KCNH2
- Uniprot ID:
- Q12809
- Molecular Weight:
- 126653.52 Da
From T3DB