B4-Na2-O7

B4-Na2-O7 - Names and Identifiers

Name	Anhydrous Borax
Synonyms	disodium B4-Na2-O7 Antipyoninum heptahydrate anhydrousborax Anhydrous Borax Anhydrous borax borax(anhydrous) boron(+3) cation oxygen(-2) anion Sodium tetraborate Disodium tetraborate,anhydrous borates,tetra,sodiumsalt,anhydrous borates,tetra,sodiumsalts(anhydrous) borates,tetra,sodiumsalts(pentahydrate) disodium bicyclo[3.3.1]tetraboroxane-3,7-diolate 2,4,6-trioxa-1,3,5,7-tetraboraheptane-3,5-diolate, 1,7-dioxo-, disodium salt
CAS	1330-43-4
EINECS	215-540-4
InChI	InChI=1/B4O7.2Na/c5-1-7-3-9-2(6)10-4(8-1)11-3;;/q-2;2*+1
InChIKey	UQGFMSUEHSUPRD-UHFFFAOYSA-N

B4-Na2-O7 - Physico-chemical Properties

Molecular Formula	B4Na2O7
Molar Mass	201.22
Density	2.367 g/mL at 25 °C (lit.)
Melting Point	741 °C (lit.)
Boling Point	1575°C
Flash Point	1575°C
Water Solubility	26 g/L (20 ºC)
Solubility	H2O: 0.1M at20°C, clear, colorless
Vapor Presure	7.3 hPa (1200 °C)
Appearance	White solid
Specific Gravity	2.367
Color	White
Exposure Limit	ACGIH: TWA 2 mg/m3; STEL 6 mg/m3NIOSH: TWA 1 mg/m3
Maximum wavelength(λmax)	['λ: 260 nm Amax: ≤0.020', , 'λ: 280 nm Amax: ≤0.015']
Merck	14,8590
PH	9.0-10.5 (25℃, 0.1M in H2O)
Storage Condition	Store at +5°C to +30°C.
Stability	Stable. Incompatible with powdered metals.
Sensitive	Hygroscopic
Refractive Index	1.501
MDL	MFCD00081185
Physical and Chemical Properties	White crystals or vitreous. A- orthorhombic crystal, relative density 2.28, melting point 742.5 ℃. B- orthorhombic crystal, relative density 2.75, melting point 664 ℃. Strong hygroscopicity. Soluble in water, slowly dissolved in methanol, can form a concentration of 13% ~ 16% of the solution.
Use	Used as an analytical reagent, but also for borax ball test

B4-Na2-O7 - Risk and Safety

Risk Codes	R62 - Possible 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. R61 - May cause harm to the unborn child R60 - May impair fertility
Safety Description	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. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S53 - Avoid exposure - obtain special instructions before use.
UN IDs	UN 1760 8/PG 2
WGK Germany	1
RTECS	ED4588000
FLUKA BRAND F CODES	34
TSCA	Yes
HS Code	28401100

B4-Na2-O7 - Reference

Reference

1. Chen Liang, Zhang Wei, Chen Yuantao, et al. Optimization of Foam Separation of Lycium barbarum Acidic Polysaccharides by Response Surface Methodology [J]. Research and Development 2014 of Natural Products (6).
2. Zhang Ningying, Gao Haiyan, Chen Hangjun. Effects of Ozone Treatment on Storage Quality and Antioxidant Enzyme Activities of Blueberries [J]. Chinese Journal of Food Science, 2017, 17(008):170-176.
3. [IF = 7.514] Jing-Nan Ren et al."Extraction of orange pectin based on the interaction between sodium caseinate and pectin." Food Chem. 2019 Jun;283:265
4. [IF = 4.759] Feng Huo et al."Enhanced light-emitting induced fluorescence detection system with capillary electrophoresis." J Chromatogr A. 2020 May;1619:460935

B4-Na2-O7 - Nature

Open Data Verified Data

white crystals or vitreous. a orthorhombic crystal, relative density 2. 28, melting point 742.5 ℃. B orthorhombic crystal, relative density 2. 75. Melting point 664 ℃. Strong hygroscopicity. Soluble in water, slowly dissolved in methanol, can form a concentration of 13% ~ 16% of the solution.

Last Update：2024-01-02 23:10:35

B4-Na2-O7 - Preparation Method

Open Data Verified Data

melting method industrial borax is put into a melting furnace, and melt dehydration is carried out under normal pressure. The dehydration temperature control part flows out, and is cooled in a stainless steel tank, then the roller crusher is finely crushed and screened to the required fineness to obtain the finished anhydrous borax product.

Last Update：2022-01-01 10:58:37

B4-Na2-O7 - Use

Open Data Verified Data

used in the manufacture of high quality glass, enamel powder, flux, non-ferrous metals and alloys flux.

Last Update：2022-01-01 10:58:36

B4-Na2-O7 - Safety

Open Data Verified Data

packed in a multi-layer paper bag lined with a polyethylene plastic film barrier. 25kg net weight per bag. Storage and transport should pay attention to strict moisture. See sodium tetraborate decahydrate for others.

Last Update：2022-01-01 10:58:37

B4-Na2-O7 - Reference Information

NIST chemical information	Information provided by: webbook.nist.gov (external link)
EPA chemical information	Information provided by: ofmpub.epa.gov (external link)
toxicity	see sodium tetraborate decahydrate.
use	used to make high-quality glass, enamel, flux, flux for non-ferrous metals and alloys, etc. used to extract boron and boron compounds used as analytical reagent, also used in borax ball test for medicine, metallurgy, tanning, ceramics, textile and food preservation agent.
production method	melting method puts industrial borax into a melting furnace, melts and dehydrates under normal pressure, and the dehydration temperature is controlled above 750 ℃. The molten borax flows out from the bottom of the melting furnace and is cooled in the stainless steel tank. After being roughly crushed by a jaw crusher, it is finely crushed by a roller crusher and screened to the required fineness to produce anhydrous borax products. Its NaB4O7 · 10H2O [heating] → Na2B4O7 10H2O ↑
toxic substance data	information provided by: pubchem.ncbi.nlm.nih.gov (external link)

Last Update：2024-04-19 11:12:30

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B4-Na2-O7

B4-Na2-O7

Anhydrous Borax

CAS: 1330-43-4

Molecular Formula: B4Na2O7

B4-Na2-O7 - Names and Identifiers

B4-Na2-O7 - Physico-chemical Properties

B4-Na2-O7 - Risk and Safety

B4-Na2-O7 - Reference

B4-Na2-O7 - Nature

Open Data Verified Data

B4-Na2-O7 - Preparation Method

Open Data Verified Data

B4-Na2-O7 - Use

Open Data Verified Data

B4-Na2-O7 - Safety

Open Data Verified Data

B4-Na2-O7 - Reference Information

Supplier List

B4-Na2-O7 Request for Quotation

Anhydrous Borax

CAS: 1330-43-4

Molecular Formula: B4Na2O7

B4-Na2-O7 - Names and Identifiers

B4-Na2-O7 - Physico-chemical Properties

B4-Na2-O7 - Risk and Safety

B4-Na2-O7 - Reference

B4-Na2-O7 - Nature

Open Data Verified Data

B4-Na2-O7 - Preparation Method

Open Data Verified Data

B4-Na2-O7 - Use

Open Data Verified Data

B4-Na2-O7 - Safety

Open Data Verified Data

B4-Na2-O7 - Reference Information

Supplier List

B4-Na2-O7