3,3'-Dimethylnaphthidine [for Colorimetric Determination of Cl in Water] TCI D0754

Chemical Identity

CAS No.: 13138-48-2
PubChem: CID 83166·SID 87567386
Formula: C22H20N2
Molecular weight: 312.42 g/mol
Purity: >97.0%(T)
Reference databases: ECHA

Full identifiers (IUPAC, SMILES, InChIKey)

IUPAC: 4-(4-amino-3-methylnaphthalen-1-yl)-2-methylnaphthalen-1-amine
SMILES: CC1=C(C2=CC=CC=C2C(=C1)C3=CC(=C(C4=CC=CC=C43)N)C)N
InChIKey: FTEGMIZQLGXBNA-UHFFFAOYSA-N
MDL: MDL00042706

Rp 6.651.750,00

~~Rp 4.667.250,00~~ Rp 6.651.750,00

Sale Sold out

Shipping calculated at checkout.

Berat 1g 5g

Pembayaran hanya melalui request quotation dan dilakukan setelah tim kami menghubungi Anda. Mohon cantumkan nomor WhatsApp aktif untuk konfirmasi pesanan & pembuatan invoice. Estimasi pengiriman 2-4 minggu setelah pembayaran.

Dokumen Keamanan & Mutu

↓ Unduh SDS / MSDS (PDF resmi TCI)

CoA (Certificate of Analysis)

Spesifik per batch produksi — diterbitkan dan dikirim bersama barang sesuai nomor lot yang Anda terima.

Contoh CoA segera tersedia.

💬 Minta CoA via WhatsApp

View full details

TCI D0754 3,3'-Dimethylnaphthidine is a naphthidine derivative: a binaphthyl dimer with two amino groups and two methyl groups. TCI labels this grade "for Colorimetric Determination of Cl in Water", which means it is prepared as a reagent for determining chlorine in water by colorimetry. Chlorine oxidizes the compound to a coloured product. Analysts can compare or measure the intensity of that colour to estimate the chlorine level in a water sample, so the reagent serves as a practical tool in routine water quality testing.

Laboratories choose this reagent because its reaction with oxidizing agents gives a clear colour. That makes it suitable for both visual reading and spectrophotometric measurement. Its binaphthyl framework carries amino groups, so it oxidizes in a controlled way. The same property lets it act as a redox indicator in certain titrations, which adds to its value on the bench. TCI also lists the product under Materials Science, in its polymer and monomer reagent category, because the diamine framework is relevant to materials research. The same compound can therefore support both analytical chemistry and exploratory materials work.

Chlorine monitoring matters a great deal in Indonesia. Regional water utility (PDAM) laboratories, environmental health laboratories and the food and beverage industry all check chlorine levels in water. Laboratories that monitor swimming pools and wastewater treatment do the same. In these settings, a colorimetric reagent with a clear response supports routine checks on treated and supplied water. Research institutions working in materials science can also use the compound when they study diamine-based building blocks.

TCI brochures (PDF)

Raw Materials for Polyimide Synthesis 2026-05-11 · p. 4
Monomers 2025-05-28 · p. 32

Related TCI products

Colorimetric chlorine determination in water: chlorine oxidizes the reagent to a coloured product, and analysts compare or measure the colour intensity to estimate chlorine content in samples.
Visual chlorine screening: the clear colour formed with oxidizing agents lets analysts read results by eye during quick routine checks of treated or supplied water.
Spectrophotometric measurement: the coloured oxidation product can be measured with a spectrophotometer, giving a more objective reading of chlorine levels in water samples.
Redox indicator in titrations: the amino-bearing binaphthyl framework oxidizes in a controlled way, so the compound can signal endpoints in certain redox titrations.
Materials science research: TCI lists the compound among polymer and monomer reagents, and its diamine framework makes it relevant to exploratory studies of diamine building blocks.

Brand	TCI (product code D0754)
CAS number	13138-48-2
Molecular formula	—
Purity	—
Category	Materials Science > Polymer/Macromolecule Reagents > Monomers
Pack sizes	please refer to the available options on the product listing
Physical form	refer to the TCI label and Safety Data Sheet supplied with the product
Storage	—

Grade: for Colorimetric Determination of Cl in Water

Store this reagent in its original tightly closed container in a cool, dry and well-ventilated place. Follow the storage conditions printed on the TCI label. The compound oxidizes readily, so keep it away from oxidizing agents, chlorine sources, direct light and moisture to protect its reagent performance. Close the container promptly after each use. Handle the material with appropriate personal protective equipment, including gloves, safety glasses and a laboratory coat. Avoid creating dust and avoid contact with skin and eyes. Work in a fume hood or well-ventilated area. Before use, consult the Safety Data Sheet for full hazard, first-aid and disposal information.

—