Calmagite, GR

Name: Calmagite, GR
Brand: Vaqora Chemicals
SKU: VQ-000328

About Calmagite, GR

Listed under CAS 3147-14-6, Calmagite is an indicator available from Vaqora Chemicals (AR grade). With the molecular formula C17H14N2O5S, it has a molar mass of 358.4 g/mol. Its systematic (IUPAC) name is 3-hydroxy-4-[(2-hydroxy-5-methylphenyl)diazenyl]naphthalene-1-sulfonic acid. Common synonyms include Calmagite, Indicator Grade.

The material typically appears as dark brown to very dark brown and black powder or powder with chunks. Literature values give a melting point of 330 °C. Keep the container tightly sealed and store it in a cool, dry area. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

Typical applications include titration end-point detection, pH determination, analytical testing and indicator for titrations. It is used across academic and industrial research.

We offer Calmagite in 1 g, 5 g, 25 g and 250 g packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Titration end-point detection
pH determination
Analytical testing
Indicator for titrations

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Calmagite, GR
Catalogue No.	VQ-000328
CAS Number	3147-14-6
IUPAC name	3-hydroxy-4-[(2-hydroxy-5-methylphenyl)diazenyl]naphthalene-1-sulfonic acid
Molecular formula	C₁₇H₁₄N₂O₅S
Molecular weight	358.4 g/mol
Exact mass	358.0623
Grade	AR
HSN code	29270090
InChIKey	VBRNLOQCBCPPHL-UHFFFAOYSA-N
SMILES	CC1=CC(=C(C=C1)O)N=NC2=C(C=C(C3=CC=CC=C32)S(=O)(=O)O)O
PubChem CID	2530

Physical properties
Physical form	Powder
Appearance	Dark brown to very dark brown and black powder or powder with chunks
Melting point	330 °C
LogP (XLogP3)	3.4
H-bond donors / acceptors	3 / 7
TPSA	128 Å²
Synonyms	1-(1-Hydroxy-4-methyl-2-phenylazo)-2-naphthol-4-sulfonic acid, 3-Hydroxy-4-(2-hydroxy-5-methylphenylazo)naphthalene-1-sulfonic acid, 3-Hydroxy-4-(6-hydroxy-m-tolylazo)naphthalene-1-sulphonic acid, Calmagite, Indicator Grade, 1-Naphthalenesulfonic acid, 3-hydroxy-4-[(2-hydroxy-5-methylphenyl)azo]-, (4Z)-4-[(2-hydroxy-5-methylphenyl)hydrazinylidene]-3-oxonaphthalene-1-sulfonic acid, 1-Naphthalenesulfonic acid,3-hydroxy-4-[(2-hydroxy-5-methylphenyl)azo]-, 3-Hydroxy-4-((6-hydroxy-m-tolyl)azo)-1-naphthalenesulfonic acid, 1-Naphthalenesulfonic acid, 3-hydroxy-4-[(6-hydroxy-m-tolyl)azo]-, 1-Naphthalenesulfonic acid, 3-hydroxy-4-((2-hydroxy-5-methylphenyl)azo)-, 1-Naphthalenesulfonic acid, 3-hydroxy-4-((6-hydroxy-m-tolyl)azo)-, 3-hydroxy-4-[(2-hydroxy-5-methylphenyl)diazenyl]naphthalenesulfonic acid

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 3147-14-6

Calmagite 0.1% w/v aqueous indicator solution (for water hardness)

CAS: 3147-14-6
Formula: C₁₇H₁₄N₂O₅S
MW: 358.4 g/mol

VQ-045776

AR / Spectroscopy

Calmagite, AR, for spectroscopy 60.0%

CAS: 3147-14-6
Formula: C₁₇H₁₄N₂O₅S
MW: 358.4 g/mol

VQ-046153

Frequently asked questions

What is the CAS number of Calmagite, GR?

The CAS Registry Number of Calmagite, GR is 3147-14-6. It is also known as 1-(1-Hydroxy-4-methyl-2-phenylazo)-2-naphthol-4-sulfonic acid, 3-Hydroxy-4-(2-hydroxy-5-methylphenylazo)naphthalene-1-sulfonic acid, 3-Hydroxy-4-(6-hydroxy-m-tolylazo)naphthalene-1-sulphonic acid.

What is the molecular formula and molecular weight of Calmagite, GR?

Calmagite, GR has the molecular formula C17H14N2O5S and a molecular weight of 358.4 g/mol. Its IUPAC name is 3-hydroxy-4-[(2-hydroxy-5-methylphenyl)diazenyl]naphthalene-1-sulfonic acid.

Which grade and pack sizes of Calmagite, GR can I order?

We supply Calmagite, GR in AR grade, in 1 g, 5 g, 25 g, 250 g, 5 x 1 kg, 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Calmagite, GR?

Yes. Every lot of Calmagite, GR is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Calmagite, GR be shipped internationally?

Yes. Calmagite, GR is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.