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Sodium hydroxide solution

49-51% in water, eluent for IC

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About This Item

Linear Formula:
NaOH
CAS Number:
1310-73-2
Molecular Weight:
40.00
MDL number:
MFCD00003548
UNSPSC Code:
12352316
PubChem Substance ID:
329763734
NACRES:
NB.21
Pricing and availability is not currently available.

vapor pressure

3 mmHg ( 37 °C)

Quality Level

100

form

liquid

concentration

49-51% in water

technique(s)

ion chromatography: suitable

impurities

≤0.0005% total nitrogen (N)
≤0.01% ammonium hydroxide precipitate

anion traces

carbonate (as Na2CO3): ≤1000 mg/kg
chloride (Cl-): ≤100 mg/kg
phosphate (PO43-): ≤5 mg/kg
silicate (as SiO2): ≤10 mg/kg
sulfate (SO42-): ≤10 mg/kg

cation traces

Al: ≤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
K: ≤100 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Ni: ≤5 mg/kg
Pb: ≤10 mg/kg
Zn: ≤5 mg/kg

SMILES string

[OH-].[Na+]

InChI

1S/Na.H2O/h;1H2/q+1;/p-1

InChI key

HEMHJVSKTPXQMS-UHFFFAOYSA-M

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General description

Sodium hydroxide solution is a strong alkaline solution which may be suitable to make dyes, drugs, cellophane, rayon and bleaches. It may also be suitable for petrochemical industry to remove impurities. This solution needs to be handled carefully, close proximity or ingestion could cause blindness, permanent scarring and sometimes can be fatal.[1]

Application

Sodium hydroxide solution may be used to characterize the morphology of the produced colloids using UV-Visible spectroscopy and transmission electron microscopy.[2] It may be used to measure specific heats using calorimeter.[3] It may also be used to study the first stages of silver oxidation using voltammetry and ellipsometry.[4]

Metrohm IC application note AN-P-055:Lactose residues in "lactose-free" milk.

Linkage

Visit the IC Portal to learn more

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Pictograms

Corrosion
GHS05

Signal Word

Danger

Hazard Statements

H290,H314

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

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Certificates of Analysis (COA)

Lot/Batch Number
BCCM7771
BCCL9675
BCCM0870
BCCJ9904
BCCJ8945

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Anne O'Daly
Sodium, 21-21 (2001)
Sodium Hydroxide Solutions.
Bertetti, John W., and Warren L. McCabe.
Industrial & Engineering Chemistry Research, 28, 247-248 (1936)
Initial stages of anodic oxidation of silver in sodium hydroxide solution studied by potential sweep voltammetry and ellipsometry.
Droog, John MM, Peter T. Alderliesten, and Gosse A. Bootsma.
J. Electroanal. Chem. Interfac. Electrochem., 99, 173-186 (1979)
A new method for fast preparation of highly surface-enhanced Raman scattering (SERS) active silver colloids at room temperature by reduction of silver nitrate with hydroxylamine hydrochloride.
Leopold, Nicolae, and Bernhard Lendl.
The Journal of Physical Chemistry B, 107, 5723-5727 (2003)
Richard J Travers et al.
Blood, 124(22), 3183-3190 (2014-09-10)
Polyphosphate (polyP) is secreted by activated platelets and has been shown to contribute to thrombosis, suggesting that it could be a novel antithrombotic target. Previously reported polyP inhibitors based on polycationic substances, such as polyethylenimine, polyamidoamine dendrimers, and polymyxin B
View All Related Papers

Questions

1–2 of 2 Questions  

  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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