Sodium Hydroxide, Merck KGaA, Darmstadt, Germany


Lab Grade Sodium Hydroxide, original Merck Germany 500 Gram or 1 Kg Plastic Bottle pack

Key Spec. Table

CAS # EC Number Hill Formula Chemical Formula Molar Mass
1310-73-2 215-185-5 HNaO NaOH 40.00 g/mol


Catalogue Number 106462
Replaces SX0600-30; SX0600; SX0600-1
Synonyms Soda caustic


Product Information
CAS number 1310-73-2
EC index number 011-002-00-6
EC number 215-185-5
Hill Formula HNaO
Chemical formula NaOH
Molar Mass 40.00 g/mol
HS Code 2815 11 00


Physicochemical Information
Density 2.13 g/cm3 (20 °C)
Melting Point 319 – 322 °C
pH value >14 (100 g/l, H₂O, 20 °C)
Solubility 1090 g/l


Safety Information according to GHS
Hazard Pictogram(s) Hazard Pictogram(s)
Hazard Statement(s) H290: May be corrosive to metals.
H314: Causes severe skin burns and eye damage.
Precautionary Statement(s) P280: Wear protective gloves/ protective clothing/ eye protection/ face protection.
P301 + P330 + P331: IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
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 + P310: IF exposed or concerned: immediately call a POISON CENTER or doctor/ physician.
Signal Word Danger
RTECS WB4900000
Storage class 8B Non-combustible, corrosive hazardous materials
WGK WGK 1 slightly hazardous to water
Disposal 13
Bases and alcoholates should be diluted if necessary by carefully stirring them into water and then neutralized (protective gloves, fume cupboard!) with hydrochloric acid (Cat. No. 100312). Before placing in container D, check the pH with pH universal indicator strips (Cat. No. 109535).


Safety Information
Hazard Symbols Hazard SymbolsCorrosive
Categories of danger corrosive
R Phrase R 35
Causes severe burns.
S Phrase S 26-37/39-45
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Wear suitable gloves and eye/face protection.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).


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


Transport Information
Declaration (railroad and road) ADR, RID UN 1823 , 8, II
Declaration (transport by air) IATA-DGR UN 1823 , 8, II
Declaration (transport by sea) IMDG-Code UN 1823 , 8, II, Segregation Group: 18 (Alkalis)


Assay (acidimetric,NaOH) ≥ 97.0 %
Carbonate (as Na₂CO₃) ≤ 1.0 %
Chloride (Cl) ≤ 0.012 %
Sulfate (SO₄) ≤ 0.01 %
Heavy metals (as Pb) ≤ 0.002 %
Al (Aluminium) ≤ 0.002 %
Fe (Iron) ≤ 0.002 %