Sodium Sulfanilate Hydrate TCI S0121

Chemical Identity

CAS No.: 123333-70-0
PubChem: CID 23664644·SID 87575731
Formula: C6H6NNaO3S
Molecular weight: 195.17 g/mol
Purity: >98.0%(HPLC)(T)

Full identifiers (IUPAC, SMILES, InChIKey)

IUPAC: sodium 4-aminobenzenesulfonate
SMILES: C1=CC(=CC=C1N)S(=O)(=O)[O-].[Na+]
InChIKey: KSVSZLXDULFGDQ-UHFFFAOYSA-M

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Berat 25g

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Dokumen Keamanan & Mutu

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CoA (Certificate of Analysis)

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Sodium Sulfanilate Hydrate from TCI is the hydrated sodium salt of sulfanilic acid. TCI lists it among its non-heterocyclic building blocks. In this compound the sulfonic acid group has been neutralised to the sodium salt, while the primary aromatic amine group stays free and available for reaction. In the laboratory it serves the same purposes as sulfanilic acid, such as azo dye synthesis and nitrite analysis. Its main practical advantage is that it dissolves easily in water, which makes everyday preparation simpler.

The main reason to choose the sodium salt is its water solubility, which is much better than that of free sulfanilic acid, a zwitterion. Stock solutions can therefore be prepared faster and under more neutral conditions, with no need to add a base first. This makes diazotisation procedures and analytical reagent preparation more straightforward and more reproducible from batch to batch. Because the material is a hydrate, its water of crystallisation must be accounted for when weighing out solutions of accurate concentration. Detailed information on each lot is given in the Certificate of Analysis (CoA), which should be checked before calculating reagent quantities.

In Indonesian laboratories, sodium sulfanilate hydrate is useful for analytical and environmental laboratories that prepare nitrite reagents, for research groups working on dyes and textiles, and for educators who demonstrate diazotisation and azo coupling in teaching labs. Its easy dissolution in water suits busy routine-testing settings, where quick, consistent reagent preparation saves time. University organic chemistry groups can also use it as a convenient aromatic amine building block for synthesis projects that need a water-soluble sulfonated starting material.

Related TCI products

Nitrite analysis: as the amine component of diazotisation-based nitrite reagents, it dissolves readily in water, so analytical reagent solutions can be made quickly without first adding a base.
Azo dye synthesis: the free primary aromatic amine can be diazotised and coupled, so it works as a convenient water-soluble starting material for preparing sulfonated azo colourants.
Dye and textile research: research groups studying colourants benefit from the sodium salt form, because neutral aqueous stock solutions make diazotisation steps easier to control and repeat.
Teaching demonstrations: educators can use it to show diazotisation and azo coupling reactions, since its good water solubility simplifies solution preparation in student laboratory sessions.
Organic synthesis building block: as a non-heterocyclic building block in TCI's catalogue, it gives synthetic chemists a sulfonated aromatic amine for building more complex molecules.

Brand	TCI (product code S0121)
CAS number	123333-70-0
Molecular formula	—
Purity	—
Category	Chemistry > Building Blocks > Non-Heterocyclic Building Blocks
Pack sizes	as listed on the product page; contact AMI Scientific for available options
Physical form	—
Storage	keep tightly closed in a cool, dry place; follow the label and Safety Data Sheet (SDS) for specific conditions

Form: hydrated sodium salt of sulfanilic acid; account for water of crystallisation when weighing (see CoA)

Keep Sodium Sulfanilate Hydrate in its original, tightly sealed container in a cool, dry, well-ventilated area, away from direct sunlight and incompatible materials such as strong oxidisers. Because it is a hydrate, keep the container closed to limit changes in water content that could affect weighing accuracy. Wear standard laboratory personal protective equipment (gloves, safety glasses and a lab coat), avoid creating or inhaling dust, and handle it according to the TCI Safety Data Sheet. Label prepared stock solutions clearly with their concentration and preparation date, and dispose of waste in line with local regulations.

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