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105593 Sodium hydroxide solution 21%


Replacement Information

Key Specifications Table



Catalog NumberPackaging Qty/Pack
1055939025 Plastic container 25 l
Catalogue Number105593
Product Information
CAS number1310-73-2
HS Code2815 12 00
Quality LevelMQ300
Biological Information
Physicochemical Information
Density1.219 g/cm3 (20 °C)
pH value>11 (H₂O, 20 °C)
Materials Information
Toxicological Information
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)P234: Keep only in original packaging.
P280: Wear protective gloves/ protective clothing/ eye protection/ face protection/ hearing protection.
P303 + P361 + P353: IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water.
P304 + P340 + P310: IF INHALED: Remove person to fresh air and keep comfortable for breathing. Immediately call a POISON CENTER/doctor.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P363: Wash contaminated clothing before reuse.
Signal WordDanger
Storage class8B Non-combustible, corrosive hazardous materials
WGKWGK 1 slightly hazardous to water
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
Categories of dangercorrosive
Product Usage Statements
Storage and Shipping Information
StorageStore at +2°C to +30°C.
Packaging Information
Transport Information
Declaration (railroad and road) ADR, RIDUN 1824 , 8, II
Declaration (transport by air) IATA-DGRUN 1824 , 8, II
Declaration (transport by sea) IMDG-CodeUN 1824 , 8, II, Segregation Group: 18 (Alkalis)
Supplemental Information
Assay (acidimetric)19.0 - 21.8 %
Carbonate (as Na₂CO₃)≤ 0.2 %
Chloride (Cl)≤ 0.005 %
Sulfate (SO₄)≤ 0.005 %
Heavy metals (as Pb)≤ 0.002 %
Fe (Iron)≤ 0.001 %
Global Trade Item Number
Catalog Number GTIN
1055939025 04022536584720


Sodium hydroxide solution 21% SDS


Safety Data Sheet (SDS) 

Sodium hydroxide solution 21% Certificates of Analysis

Product Number PackagingSpecificationLot Number
1055939025 Plastic containerPDF Specification Document