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structure of 1303-96-4

Sodium Tetraborate Decahydrate(CAS 1303-96-4)

CAS No.: 1303-96-4 Brand: MolBest
M. Ft.: Na2B4O7·10H2O Cat. No: G4364404
M. Wt.: 381.37 MDL: MFCD00149193
Storage: Store in a cool,dry area. Use: For laboratory research use only
HS CODE: 28401990 UN No.: UN 1458
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Physical and chemical properties of 1303-96-4

Boiling Point

608 °F

Decomposition

When heated to decomposition it emits toxic fumes of /sodium oxide and boron/.

Density

1.73

Exact Mass

382.086823

Exposure Limits

ACGIH: TWA 2 mg/m3; STEL 6 mg/m3
NIOSH: TWA 5 mg/m3

Index of Refraction

Index of refraction: 1.447 (alpha); 1.469 (beta); 1.472 (gamma)

Melting Point

167 °F

Merck

14,8590

Molecular Formula

B4H20Na2O17

Molecular Weight

381.37

Odor

Odorless

pH

pH at 20 °C: 9.3 (0.1% solution); 9.2 (1.0% solution)

pH Range

9.2

PSA

184.57000

Stability

Stable. When heated above about 62 °C, borax loses water of crystallization, first forming the pentahydrate and then anhydrous sodium tetraborate.

Storage condition

2-8°C

Vapour Pressure

0 mmHg (approx)

Water Solubility

60 G/L (20 ºC)

λmax

λ: 260 nm Amax: 0.012
λ: 280 nm Amax: 0.010

Q&A for CAS 1303-96-4

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Download SDS of 1303-96-4

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Signal Word

Danger

Hazard Statements

H319 Causes serious eye irritation
H360 May damage fertility or the unborn child

Safety Data Sheet

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