Product Information
CAS number	1303-96-4
EC index number	005-011-01-1
EC number	215-540-4
Grade	ACS,ISO,Reag. Ph Eur
Hill Formula	B₄Na₂O₇*10H₂O
Chemical formula	Na₂B₄O₇*10 H₂O
Molar Mass	381.32 g/mol
HS Code	2840 19 90

Applications
Application	di-Sodium tetraborate decahydrate for analysis ACS,ISO,Reag. Ph Eur. CAS 1303-96-4, chemical formula Na₂B₄O₇*10 H₂O.

Physicochemical Information
Density	1.72 g/cm3 (20 °C)
Melting Point	75 °C Elimination of water of crystallisation
pH value	9.2 (47 g/l, H₂O, 20 °C)
Vapor pressure	0.213 hPa (20 °C)
Bulk density	750 kg/m3
Solubility	49.74 g/l

Toxicological Information
LD 50 oral	LD50 Rat 2660 mg/kg
LD 50 dermal	LD50 Rabbit > 2000 mg/kg

Safety Information according to GHS
Hazard Pictogram(s)
Hazard Statement(s)	H360FD: May damage fertility. May damage the unborn child. H319: Causes serious eye irritation.
Precautionary Statement(s)	P201: Obtain special instructions before use. P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P308 + P313: IF exposed or concerned: Get medical advice/ attention.
Signal Word	Danger
RTECS	VZ2275000
Storage class	6.1 D Non combustible, acute toxicity cat. 3 / toxic or substances with chronic effects
WGK	WGK 1 slightly water endangering
Disposal	3 Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.

Safety Information
Hazard Symbols	Toxic
Categories of danger	toxic for reproduction
R Phrase	R 60-61-36 May impair fertility.May cause harm to the unborn child.Irritating to eyes.
S Phrase	S 53-45-26 Avoid exposure - obtain special instructions before use.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

Storage and Shipping Information
Storage	Store at +5°C to +30°C.

Specifications
Assay (acidimetric)	99.5 - 103.0 %
Identity	passes test
Appearance of solution	passes test
Insoluble matter	≤ 0.005 %
pH-value (0.01 M Solution, 25 °C)	9.15 - 9.20
pH-value (4 %, water)	9.0 - 9.6
Chloride (Cl)	≤ 0.0007 %
Phosphate (PO₄)	≤ 0.001 %
Sulphate (SO₄)	≤ 0.005 %
Heavy metals (as Pb)	≤ 0.001 %
As (Arsenic)	≤ 0.0005 %
Ca (Calcium)	≤ 0.005 %
Cu (Copper)	≤ 0.0005 %
Fe (Iron)	≤ 0.0005 %
NH₄ (Ammonium)	≤ 0.001 %
Pb (Lead)	≤ 0.0005 %
Corresponds to ACS,ISO,Reag. Ph Eur

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Merck 106308.1000 Sodium Tetraborate Decahydrate GR

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