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| CAS No.: | 1330-43-4 |
|---|---|
| Name: | Sodium tetraborate |
| Article Data: | 3 |
| Cas Database | |
| Molecular Structure: | |
|
|
|
| Formula: | Na2B4O7 |
| Molecular Weight: | 201.219 |
| Synonyms: | Boric acid(H2B4O7), disodium salt (8CI);Sodium tetraborate (Na2B4O7) (7CI);Anhydrousborax;Borax glass;Disodium tetraborate;FR 28;Fireless B;Fireless B Liquid;Fused Borax;Rasorite 65;Sodium biborate;Sodium boron oxide(Na2B4O7);Spraybor; |
| EINECS: | 215-540-4 |
| Density: | 2.367 g/cm3 |
| Melting Point: | 741 °C(lit.) |
| Boiling Point: | 1575°C |
| Flash Point: | 1575°C |
| Solubility: | water: 0.1 M at 20 °C, clear, colorless |
| Appearance: | white solid |
| Hazard Symbols: |
 Xn, Xi
|
| Risk Codes: | 62-63-36/38-36/37/38 |
| Safety: | 36/37-24/25-26-36-23 |
| Transport Information: | UN 1760 8/PG 2 |
| PSA: | 92.27000 |
| LogP: | -2.10280 |
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Chemistry
Molecular Structure of Sodium tetraborate (CAS No.1330-43-4):
Molecular Formula: Na2B4O7
Molecular Weight: 201.21
IUPAC Name: Disodium [oxido(oxoboranyloxy)boranyl]oxy-oxoboranyloxyborinate
CAS No: 1330-43-4
EINECS: 215-540-4
H bond acceptors: 7
H bond donors: 2
Freely Rotating Bonds: 8
Density: 2.367 g/mL at 25 °C(lit.)
Boiling Point: 1575°C
Flash Point: 1575°C
Polar Surface Area: 102.29 Å2
Density: 2.367 g/cm3
Melting Point: 741 ºC
Water Solubility: 26 g/L (20 ºC)
Sensitive: Hygroscopic
Stability: Stable. Incompatible with powdered metals.
Product Categories: Inorganics
Classification Code: Reproductive Effect
Canonical SMILES: B(=O)OB([O-])OB([O-])OB=O.[Na+].[Na+]
InChI: InChI=1S/B4O7.2Na/c5-1-9-3(7)11-4(8)10-2-6;;/q-2;2*+1
InChIKey: RPAYJVFLNVKVRS-UHFFFAOYSA-N
Uses
Sodium tetraborate (CAS No.1330-43-4) has been used to take advantage of the co-complexing ability of borate with other agents in water to complex various substances.
Sodium tetraborate and a suitable polymer bed are used to chromatograph non-glycosylated hemoglobin differentially from glycosylated hemoglobin, which is an indicator of long term hyperglycemia in diabetes mellitus.
A mixture of Sodium tetraborate and ammonium chloride is used as a flux when welding iron and steel. And it can also be used mixed with water as a flux.
It can be used as a food additive in some countries but is banned in the United States.
It also can be used as a component of detergents, ingredient in enamel glazes,etc.
Toxicity Data With Reference
LD50 score is tested at 2.66 g/kg in rats.
Consensus Reports
Reported in EPA TSCA Inventory.
Safety Profile
Safety Information of Sodium tetraborate (CAS No.1330-43-4):
Hazard Codes: 
Xn,
Xi
Risk Statements: 62-63-36/38-36/37/38
R62:Risk of impaired fertility.
R63:Possible risk of harm to the unborn child.
R36/38:Irritating to eyes and skin.
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements Sodium tetraborate (CAS No.1330-43-4): 36/37-24/25-26-36-23
S36/37:Wear suitable protective clothing and gloves.
S24/25:Avoid contact with skin and eyes.
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36:Wear suitable protective clothing.
S23:Do not breathe vapour.
RIDADR: UN 1760 8/PG 2
WGK Germany: 1
RTECS: ED4588000
F: 34
HS Code: 28401100
Hazardous Substances Data: 1330-43-4(Hazardous Substances Data)
Standards and Recommendations
OSHA PEL: TWA 10 mg/m3
ACGIH TLV: TWA 1 mg/m3
Specification
Sodium tetraborate (CAS No.1330-43-4), it also can be called Anhydrous borax ; Borax glass ; Borax, anhydrous ; Borax, dehydrated ; Borax, fused ; Disodium tetraborate .It is pale yellow solid or thick liquid with a faint odor of detergent. If mixes with water, Soap bubbles may be produced.