Basic information
- Standard SMILES
[K+].[K+].[O-]B1OB2OB([O-])OB(O1)O2- InChIKey
FZQSLXQPHPOTHG-UHFFFAOYSA-N- Molecular formula
- B4K2O7
- Average molar mass
- 233.4 g/mol
- Monoisotopic mass
- 233.9290373
Names & identifiers
- Preferred name
- Potassium tetraborate
- IUPAC
- dipotassium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane
- English name
- Potassium borate
- Molecular formula
- BK3O3
- Molecular weight
- 176.1
Names & synonyms
Show more names
Database identifiers
- CAS
1332-77-0- PubChem CID
- 9816075
- DTXSID
DTXSID2052782- UNII
- ZV5114S322
- EC Number
- 215-575-5
Properties
Computed structural properties
- Topological polar surface area
- 92.3 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 7
- Rotatable bonds
- 0
- Heavy atoms
- 13
- Formal charge
- 0
- Complexity
- 121
Experimental & physicochemical properties
Physical Description
Liquid; Dry Powder
Pentahydrate: White solid; [Merck Index] White crystalline solid; Odorless; [U.S. Borax MSDS]
Physicochemical properties
- Density
- 0.4 · 0.4-0.7 g/cm3
- solubility
- slightly soluble in ethanol
- form
- white crystalline powder
- color
- white crystals, crystalline powder
- Water Solubility
- 4 parts · soluble 4 parts H2O; slightly soluble alcohol [MER06]
- Cosmetics Ingredients Functions
- BUFFERING
- InChI
- InChI=1S/BO3.3K/c2-1(3)4;;;/q-3;3*+1
- InChIKey
- WUUHFRRPHJEEKV-UHFFFAOYSA-N
- SMILES
- [K+].[K+].[K+].B([O-])([O-])[O-]
- CAS DataBase Reference
- 1332 · 1332-77-0(CAS DataBase Reference)
- Substances Added to Food (formerly EAFUS)
- POTASSIUM BORATE
- EWG's Food Scores
- 1 · 1-3
- FDA UNII
- 5114 S322 · ZV5114S322
- EPA Substance Registry System
- Boron potassium oxide (B4K2O7) (1332-77-0)
- Symbol(GHS)
- 8 · GHS08
- Signal word
- Warning
- Hazard statements
- 361 · H361
- Precautionary statements
- 201 · P201-P202-P281-P308+P313-P405-P501
- TSCA
- TSCA listed
- REACH Registrations
- Active
Safety & regulation
GHS classification
GHS Classification
This chemical does not meet GHS hazard criteria for 2.9% (6 of 205) of reports.
Warning
H361 (30.7%): Suspected of damaging fertility or the unborn child [Warning Reproductive toxicity]
P203, P280, P318, P405, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 205 reports by companies from 16 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Warning
Hazard information
Regulatory Information
Chemical: Boric acid (H2B4O7), dipotassium salt
Boron potassium oxide (B4K2O7) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Boron potassium oxide (B4K2O7) are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)
Status: Active Update: 14-02-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/14283
Boron potassium oxide (B4K2O7): Does not have an individual approval but may be used as a component in a product covered by a group standard. It is not approved for use as a chemical in its own right.
Hazards Summary
Not a skin or eye irritant; Inhalation of dusts at concentrations greater than 10 mg/m3 may cause mild nose and throat irritation; Low acute oral toxicity; The testes have been shown to be a target organ of toxicity in high-dose oral animal studies; [U.S. Borax MSDS] See Boric acid.
Hazard Classes and Categories
Repr. 2 (30.7%)
Reproductive toxicity - category 1B
Specific target organ toxicity - Single exposure - Category 3 (Respiratory tract irritation)
Safety data
- tsca
- TSCA listed
- Signal word
- Warning
- Symbol(GHS)
- GHS08
- Hazard statements
- H361
- REACH Registrations
- Active
- Precautionary statements
- P201-P202-P281-P308+P313-P405-P501
Chemistry & industry
Uses & manufacturing
Uses
Used as a cleanser; [REPROTOX] Used as a neutron absorber, in cleaning compounds, soldering and brazing fluxes, and as a flux in welding rods; [U.S. Borax MSDS]
Welding [Category: Weld]
General Manufacturing Information
Fabricated Metal Product Manufacturing
Boron potassium oxide (B4K2O7): ACTIVE
Applications
DescriptionPotassium Borate is the inorganic salt
UsesPotassium borate is used as a disinfectant and a raw material for manufacturing disinfectants. It can also be used as a casein solvent and anti-wear additive, as well as a component of welding flux and diazo-type developing solution. In chemical analysis, it is the most suitable standard substance for determining the titer of acids.
Upstream & downstream products
Upstream raw materials
Related reactions
No reaction records under the current filter.
Linked notes
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