Solochrome dark blue

Name: Solochrome dark blue
Brand: Vaqora Chemicals
SKU: VQ-000409

About Solochrome dark blue

Vaqora Chemicals supplies Solochrome dark blue, an indicator registered under CAS number 2538-85-4. Its molecular formula is C20H13N2NaO5S and its molecular weight is 416.4 g/mol. The IUPAC name is sodium 3-hydroxy-4-[(2-hydroxynaphthalen-1-yl)diazenyl]naphthalene-1-sulfonate. Alternative names: Eriochrome Blue Black R and Mordant Black 17.

The material typically appears as a dark brown powder. Store sealed in a dry, well-ventilated location away from incompatible materials. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

Key uses span titration end-point detection, pH determination, analytical testing and indicator for titrations. Our customers for this product work in academic and industrial research.

We offer Solochrome dark blue in 5 g, 25 g, 100 g and 1 kg 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

Specifications & identifiers

Chemical identifiers
Product name	Solochrome dark blue
Catalogue No.	VQ-000409
CAS Number	2538-85-4
IUPAC name	sodium 3-hydroxy-4-[(2-hydroxynaphthalen-1-yl)diazenyl]naphthalene-1-sulfonate
Molecular formula	C₂₀H₁₃N₂NaO₅S
Molecular weight	416.4 g/mol
Exact mass	416.0443
HSN code	29270090
InChIKey	ZQWICJYATMSSSD-UHFFFAOYSA-M
SMILES	C1=CC=C2C(=C1)C=CC(=C2N=NC3=C(C=C(C4=CC=CC=C43)S(=O)(=O)[O-])O)O.[Na+]
PubChem CID	135465074

Physical properties
Physical form	Powder
Appearance	Dark brown powder
H-bond donors / acceptors	2 / 7
TPSA	131 Å²
Synonyms	1-(2-Hydroxy-1-naphthylazo)-2-naphthol-4-sulfonic acid sodium salt, Eriochrome Blue Black R, Mordant Black 17, Palatine Chrome Black 6BN, Calcon, 1-Naphthalenesulfonic acid, 3-hydroxy-4-((2-hydroxy-1-naphthalenyl)azo)-, monosodium salt, 1-Naphthalenesulfonic acid, 3-hydroxy-4-[(2-hydroxy-1-naphthalenyl)azo]-, monosodium salt, Magracrom Blue, Hispacrom Blue B, Sunchromine Blue Black R, Chrome Fast Cyanine GR, Chromazine Blue Black R

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 2538-85-4

AR

Solochrome dark blue

CAS: 2538-85-4
Formula: C₂₀H₁₃N₂NaO₅S
MW: 416.4 g/mol

VQ-046671

Frequently asked questions

What is the CAS number of Solochrome dark blue?

The CAS Registry Number of Solochrome dark blue is 2538-85-4. It is also known as 1-(2-Hydroxy-1-naphthylazo)-2-naphthol-4-sulfonic acid sodium salt, Eriochrome Blue Black R, Mordant Black 17.

What is the molecular formula and molecular weight of Solochrome dark blue?

Solochrome dark blue has the molecular formula C20H13N2NaO5S and a molecular weight of 416.4 g/mol. Its IUPAC name is sodium 3-hydroxy-4-[(2-hydroxynaphthalen-1-yl)diazenyl]naphthalene-1-sulfonate.

Which grade and pack sizes of Solochrome dark blue can I order?

We supply Solochrome dark blue, in 5 g, 25 g, 100 g, 1 kg, 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Solochrome dark blue?

Yes. Every lot of Solochrome dark blue 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 Solochrome dark blue be shipped internationally?

Yes. Solochrome dark blue 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.