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Description
Catalogue Number	100165
Synonyms	Orthoboric acid, Trihydroxidoboron

Physicochemical Information
Density	1.48 g/cm3 (23 °C)
Melting Point	>1000 °C (decomposition)
pH value	5.1 (1.8 g/l, H₂O, 25 °C)
Vapor pressure	<0.1 hPa (25 °C)
Bulk density	400 – 600 kg/m3
Solubility	49.2 g/l

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

Safety Information according to GHS
Hazard Pictogram(s)
Hazard Statement(s)	H360FD: May damage fertility. May damage the unborn child.
Precautionary Statement(s)	P201: Obtain special instructions before use. P202: Do not handle until all safety precautions have been read and understood. P280: Wear protective gloves/ protective clothing/ eye protection/ face protection/ hearing protection. P308 + P313: IF exposed or concerned: Get medical advice/ attention. P405: Store locked up. P501: Dispose of contents/ container to an approved waste disposal plant.
Signal Word	Danger
RTECS	ED4550000
Storage class	6.1D Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
WGK	WGK 1 slightly hazardous to water
Disposal	28 Aqueous solutions: Container D.

Safety Information
Categories of danger	toxic for reproduction

Storage and Shipping Information
Storage	Store at +2°C to +30°C.

Specifications
Assay (alkalimetric)	99.5 – 100.5 %
Identity	passes test
Appearance of solution	passes test
pH-value (3.3 %, water)	3.8 – 4.8
Chloride (Cl)	≤ 0.0003 %
Phosphate (PO₄)	≤ 0.0005 %
Sulfate (SO₄)	≤ 0.0005 %
Solubility in ethanol	passes test
In methanol insoluble matter	≤ 0.005 %
Heavy metals (as Pb)	≤ 0.0005 %
Ca (Calcium)	≤ 0.002 %
Fe (Iron)	≤ 0.0001 %
Pb (Lead)	≤ 0.001 %
Organic impurities	passes test
Nonvolatile with methanol	≤ 0.05 %
Corresponds to ACS,ISO,Reag. Ph Eur

Merck 100165 1000 Boric Acid Gr For Analysis Acs,iso 1 KG.