71687

Sodium hydroxide

BioUltra, for luminescence, ≥98.0% (T), pellets

• Synonym(s): Caustic Lye, Caustic Soda, Soda Lye, Sodium Hydrate, ‘Caustic soda’
• Linear Formula: NaOH
• CAS Number: 1310-73-2
• Molecular Weight: 40.00
• EC Number: 215-185-5
• MDL number: MFCD00003548
• UNSPSC Code: 12352316
• PubChem Substance ID: 57652336
• NACRES: NA.32

Properties

• grade: for luminescence
• vapor density: >1 (vs air)
• vapor pressure: <18 mmHg ( 20 °C); 3 mmHg ( 37 °C)
• product line: BioUltra
• Assay: ≥98.0% (T)
• form: pellets
• technique(s): cell culture | mammalian: suitable
• impurities: insoluble matter, passes filter test; ≤0.0003% total nitrogen (N); ≤0.0005% silicon dioxide (SiO₂); ≤1.0% sodium carbonate (Na₂CO₃)
• mp: 318 °C (lit.)
• solubility: H₂O: 1 M at 20 °C, clear, colorless
• density: 2.13 g/cm³
• anion traces: chloride (Cl^-): ≤70 mg/kg; phosphate (PO₄^3-): ≤5 mg/kg; sulfate (SO₄^2-): ≤50 mg/kg
• cation traces: Ag: ≤5 mg/kg; Al: ≤5 mg/kg; As: ≤0.1 mg/kg; Ba: ≤5 mg/kg; Bi: ≤5 mg/kg; Ca: ≤10 mg/kg; Cd: ≤5 mg/kg; Co: ≤5 mg/kg; Cr: ≤5 mg/kg; Cu: ≤5 mg/kg; Fe: ≤5 mg/kg; Hg: ≤0.1 mg/kg; K: ≤500 mg/kg; Li: ≤5 mg/kg; Mg: ≤5 mg/kg; Mn: ≤5 mg/kg; Mo: ≤5 mg/kg; Ni: ≤5 mg/kg; Pb: ≤5 mg/kg; Sr: ≤5 mg/kg; Zn: ≤5 mg/kg
• SMILES string: [OH-].[Na+]
• λ: 1 M in H₂O
• UV absorption: λ: 260 nm A_max: 0.015; λ: 280 nm A_max: 0.01
• suitability: in accordance for luminescence
• InChI: 1S/Na.H2O/h;1H2/q+1;/p-1
• InChI key: HEMHJVSKTPXQMS-UHFFFAOYSA-M

Description

General description

Sodium Hydroxide, also known as caustic soda or lye, is a white crystalline odorless solid which is corrosive and absorbs moisture from the air. When dissolved in water, Sodium Hydroxide generates heat to ignite combustible materials. In the form of pellets, Sodium Hydroxide, when dissolved, forms a colorless liquid, denser than water.

Application

Sodium Hydroxide is generally used in the solid or 50% solution form. It is suitable for use at various stages of soaps, paper, rayon, and petroleum product manufacturing. It is also used in carbohydrate research using FTIR analysis. Sodium Hydroxide is used as a pre-treatment reagent to study enzymatic hydrolysis.

Safety Information

• Pictograms: GHS05
• Signal Word: Danger
• Hazard Statements: H290,H314
• Precautionary Statements: P234 - P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A
• Storage Class Code: 8B - Non-combustible corrosive hazardous materials
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves