Borax (B4Na2O7.10H2O)
Also known as BORAX, Borax decahydrate, Sodium borate decahydrate
Key facts
What buyers check first
- Appearance
- White, monoclinic crystals
- Melting point
- 75 °C
- Boiling point
- 320 °C
- Density
- 1.73 g/cm³
- Solubility
- In water, 5.93 × 10⁺⁴ mg/L at 25 °C
- HS code
- 284019
- Category
- Silicates, borates and other salts
What is Borax (B4Na2O7.10H2O)?
Plain description, key identifiers and synonyms
Borax (B4Na2O7.10H2O) is a chemical substance with the molecular formula H20B4Na2O17 and a molar mass of 381.37 g/mol. Its CAS registry number is 1303-96-4. The IUPAC name is disodium, 3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane, decahydrate.
Identifiers
Registry numbers, names and line notations, tap to copy
- IUPAC name
- disodium, 3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane, decahydrate
- CAS number
- 1303-96-4 CAS number cross-checkedOther or deprecated CAS: 12447-40-4, 1313726-63-4, 1330-43-4, 71377-02-1
- EC numbers
- 603-411-9, 615-285-2
- Molecular formula
- H20B4Na2O17
- UNII
- 91MBZ8H3QO
- MDL number
- MFCD00149193
- InChIKey
- CDMADVZSLOHIFP-UHFFFAOYSA-N
- InChI
- InChI=1S/B4O7.2Na.10H2O/c5-1-7-3-9-2(6)10-4(8-1)11-3;;;;;;;;;;;;/h;;;10*1H2/q-2;2*+1;;;;;;;;;;
- SMILES (canonical and isomeric)
- B1(OB2OB(OB(O1)O2)[O-])[O-].O.O.O.O.O.O.O.O.O.O.[Na+].[Na+]
Synonyms
- BORAX
- Borax decahydrate
- Sodium borate decahydrate
- Sodium pyroborate decahydrate
- Antipyonin
- Borascu
- Boricin
- Solubor
- Tronabor
- Jaikin
- Neobor
- Bura
- Gerstley borate
- Gertley borate
- Boro-spray
- Disodium tetraborate decahydrate
- Sodium borate, decahydrate
- Sodium biborate decahydrate
- Boric acid (H2B4O7), disodium salt, decahydrate
- Boron sodium oxide (B4Na2O7), decahydrate
- sodium diborate
- sodium meta borate
- Borax 200ck
- Borax 30C
- Na(2)B(4)O(7) decahydrate
Show all 34 synonymsShow fewer synonyms
- Sodium Borate
- Sodium tetraborate decahydrate
- disodium, 3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane, decahydrate
- Borax granular
- B4H20Na2O17
- Puffed borax
- Disodiumtetraboratetrihydrate
- Na2B4O7 decahydrate
- 20 Mule Team Borax
Physical and chemical properties
Measured values and descriptors computed from the structure
Physical and chemical properties
Measured values, check the supplier specification for your grade
| Appearance | White, monoclinic crystalsexp.Measured value |
|---|---|
| Odour | Odorlessexp.Measured value |
| Taste | Alkalineexp.Measured value |
| Melting point | 75 °Cexp.Measured value |
| Boiling point | 320 °Cexp.Measured value |
| Density | 1.73 g/cm³exp.Measured value |
| Solubility | In water, 5.93 × 10⁺⁴ mg/L at 25 °Cexp.Measured value |
| Vapour pressure | Approximately 0 mm Hgexp.Measured value |
Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.
Computed descriptors
Calculated from the structure, useful for screening and formulation
| Molecular weight | 381.37 g/molcalc.Computed value |
|---|---|
| Exact mass | 382.0868 Dacalc.Computed value |
| LogP (octanol/water) | -18.48calc.Computed value |
| Topological polar surface area | 407.3 Ųcalc.Computed value |
| Hydrogen bond donors | 0calc.Computed value |
| Hydrogen bond acceptors | 7calc.Computed value |
| Rotatable bonds | 0calc.Computed value |
| Heavy atoms | 23calc.Computed value |
| Rings | 2calc.Computed value |
| Aromatic rings | 0calc.Computed value |
| Fraction sp3 carbons | 0calc.Computed value |
| Formal charge | 0calc.Computed value |
| Stereocentres | 0calc.Computed value |
| Components | 13calc.Computed value |
Calculated for screening. Confirm critical figures with the supplier.
Murcko scaffold
The ring system that remains when every side chain is removed
Safety and hazards
GHS classification summary, not a safety data sheet
Hazard statements
- H360FDMay damage fertility. May damage the unborn child.
Precautionary statements (5)
- P203Obtain, read and follow all safety instructions before use.
- P280Wear protective gloves, protective clothing, eye protection and face protection.
- P318If exposed or concerned, get medical advice.
- P405Store locked up.
- P501Dispose of contents and container in accordance with local regulations.
GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.
Full safety data and first aidBorax (B4Na2O7.10H2O) suppliers
Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings
- India, Vadodara ManufacturerUnclaimed profileSodium Borate DecahydrateGrade, purity and minimum order on requestPrice on request
- Germany, HamburgUnclaimed profileBorax DecahydrateGrade, purity and minimum order on requestPrice on request
- South Korea, Ansan ManufacturerUnclaimed profileBorax (B4Na2O7.10H2O)Grade, purity and minimum order on requestPrice on request
- South Korea, SeoulUnclaimed profileBorax (B4Na2O7.10H2O)Grade, purity and minimum order on requestPrice on request
- Australia, MintoUnclaimed profileBorax DecahydrateGrade, purity and minimum order on requestPrice on request
- Thailand, Phra PradaengUnclaimed profileBoraxGrade, purity and minimum order on requestPrice on request
- Thailand, SamphanthawongUnclaimed profileBorax decahydrateGrade, purity and minimum order on requestPrice on request
- United StatesUnclaimed profileBorax (B4Na2O7.10H2O)Grade, purity and minimum order on requestPrice on request
- ChinaUnclaimed profileBoraxGrade, purity and minimum order on requestPrice on request
- Price on request
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Where suppliers are based
183 suppliers in 41 countries
- India71
- United States19
- China15
- Germany6
- Australia4
- Canada4
- and 35 more countries
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Borax (B4Na2O7.10H2O) price
Indicative price range per kg from live supplier offers
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Uses and applications
What the substance is used for, by industry and function
Long been used as a mild antiseptic fungicide and as a herbicide ... Total control of vegetation on non-crop land, such as paths, giving long-term control. Also used in insect baits for food stores to control Formicidae.
Soldering metals, manufacture of glazes and enamels, tanning, in cleaning compounds, artificially aging wood, as preservative, either alone or with other antiseptics against wood fungus, fireproofing fabrics and wood, curing and preserving skins, in cockroach control. In buffers, as a complexing or masking agent in analytical chemistry. Pharmaceutic aid (alkalizer).
Used in ant poisons, for fly control around refuse and manure piles, as a larvicide, in manufacture of glazes, enamels, cleaning compounds, and in soldering metals.
Industrial uses: Abrasives, Plating agent, Etching agent, Chelating agent, Flame retardant, Soil amendments (fertilizers).
Consumer uses: Other, Adhesion/cohesion promoter, Soil amendments (fertilizers), Flame retardant.
Use classes: Enzymes and Enzyme Stabilizers, Safer Chemical Classes, Cosmetics.
Industries and functions
Roles
- buffer
- ophthalmology drug
- pharmaceutical
Functional uses
- Biocide
- Chelating agent
- Chemical reaction regulator
- Cleaning agent
- Flame retardant
- Flux agent
- Insulators
- Stabilizing agent
- Surface modifier
- Surfactant (surface active agent)
- pH regulating agent
How it is made
Processing of sodium borate ores by crushing, heating, mechanical separation, selective crystallization, and finally flotation of borax decahydrate or pentahydrate from the resultant concentrated borax liquor
Disodium tetraborate (borax) containing 5 or 10 molecules of water is produced mainly from sodium-containing borate ores. The mined ore is crushed and ground before dissolution in a hot recycled aqueous solution containing some borax. Insoluble gangue (clay particles) present in the hot slurry is separated off to produce a clear concentrated borax solution.
Read more
Evaporative cooling of this solution to selected temperatures results in crystallization of the desired products, which are then separated from the residual liquor and dried. (Borax)
Fractional crystallization from Searles Lake brine, solution of kernite ore followed by crystallization. Also from colemanite, natural borax, uxelite, and other borates.
Regulatory status
Inventories, regulations and trade controls that list this substance
Europe
- EU harmonised classification (CLP Annex VI)Index no: 005-011-00-4[4]
United States
- Safer Choice ingredient list (USA)
- TSCA inventory (USA)Status: Active in US commerce
Health and food
- Active ingredient in FDA approved drug labels
HS code and trade data
Customs classification and reported world trade statistics
Global trade
World import and export statistics for the HS code Borax (B4Na2O7.10H2O) is traded under.
Disodium tetraborate (refined borax), other
- United States79.1%
- Netherlands8.9%
- Poland2.7%
- China47.5%
- United States8.2%
- Netherlands5.0%
The HS code shown for Borax (B4Na2O7.10H2O) is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.
Related chemicals
Parent and salt forms, stereoisomers, similar structures and isomers
Similar structures
Nearest neighbours by Morgan fingerprint Tanimoto similarity
Frequently asked questions
Quick answers about Borax (B4Na2O7.10H2O), based on the data on this page
What is Borax (B4Na2O7.10H2O)?
What is the CAS number of Borax (B4Na2O7.10H2O)?
What is the molecular formula and weight of Borax (B4Na2O7.10H2O)?
What is Borax (B4Na2O7.10H2O) used for?
Is Borax (B4Na2O7.10H2O) hazardous?
What is the HS code of Borax (B4Na2O7.10H2O)?
Where can I buy Borax (B4Na2O7.10H2O)?
Where can I buy Borax (B4Na2O7.10H2O) in India?
What is the price of Borax (B4Na2O7.10H2O)?
Guides for buyers
Practical guides that help when you source, ship or handle Borax (B4Na2O7.10H2O)
- Guide, SafetyHow to read a safety data sheet in 10 minutesA section by section method to pull the essentials out of any 16 section SDS: identity, hazards, composition, storage, PPE, properties, transport and emergency measures.Read
- Guide, Trade and logisticsShipping dangerous goods: UN numbers, classes and packing groupsHow the UN dangerous goods system works for chemicals, from the nine classes and UN numbers to packing groups, UN packaging marks, labels, documents and segregation.Read
- Guide, SafetyGHS pictograms, signal words and hazard statements explainedA practical guide to the nine GHS pictograms, the signal words Danger and Warning, H and P statements, and how to read a chemical label in seconds.Read
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