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35639 Sodium hydroxide, 40% w/v aq. soln.

CAS Number

Stock No. Size Price ($) Quantity Availability
35639-K2 1L 45.00
35639-K7 4L 84.60
35639-M4 20L 189.00
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Sodium hydroxide, 40% w/v aq. soln.


Chemical Properties

Formula Weight
Storage & Sensitivity
Ambient temperatures.
Miscible with glycerol, ethanol and methanol. Immiscible with acetone and ether.


Sodium hydroxide, 40% w/v aq. solution is used as a chemical reactant or neutralization agent in various industries like chemical, pharmaceutical, textile, pulp and paper, metal and food industries and soap and detergent manufacturing. It is also used in the manufacture of synthetic fabrics such as rayon and also for manufacturing of food products. It is utilized for pH adjustment and formation of in situ sodium methylate in bioethanol and biodiesel processing.


Air sensitive and hygroscopic. It is deliquescent and readily absorbs moisture and carbon dioxide in air. Incompatible with strong oxidizing agents, strong acids and organic materials.

Literature References

Muslim, T.; Alam, M. T.; Begum, H. A.; Alam, S. S. Synthesis of Some Chitosan Derivatives and Their Iron (II) Adsorption Behavior-a Class of Pharmaceutically Important Biosorbents. Bangladesh pharm. J. 2015, 17 (2), 193-201.

Boonkaew, B.; Rengpipat, S.; Barber, P. M.; Rengpipat, S.; Supaphol, P.; Kempf, M.; He, J.; John V. T.; Cuttle, L. Development and Characterization of a Novel, Antimicrobial, Sterile Hydrogel Dressing for Burn Wounds: Single-Step Production with Gamma Irradiation Creates Silver Nanoparticles and Radical Polymerization. J. Pharm. Sci. 2014, 103 (10), 3244-3253.

GHS Hazard and Precautionary Statements

Hazard Statements: H290-H314-H335

May be corrosive to metals. Causes severe skin burns and eye damage. May cause respiratory irritation.

Precautionary Statements: P234-P260-P264b-P271-P280-P301+P330+P331-P303+P361+P353-P304+P340-P305+P351+P338-P310-P363-P390-P501c

Keep only in original container. Do not breathe dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Use only outdoors or in a well-ventilated area. Wear protective gloves/protective clothing/eye protection/face protection. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician. Wash contaminated clothing before reuse. Absorb spillage to prevent material damage. Dispose of contents/ container to an approved waste disposal plant

Other References

Hazard Class
Packing Group
Harmonized Tariff Code


  • A10926

    Diethylenetriaminepentaacetic acid, 98+%
  • A11482

    Chloroacetic acid, 99%
  • 13455

    Sodium hydroxide (low chloride), ACS, 97.0% min
  • 14243

    Lead(II) nitrate, ACS, 99.0% min
  • 22911

    n-Heptane, HPLC grade, 99+%

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