Chromotropic acid sodium salt

Name: Chromotropic acid sodium salt
Brand: Vaqora Chemicals
SKU: VQ-010839

About Chromotropic acid sodium salt

Chromotropic acid sodium salt is an organosulfur compound in Synthesis grade carrying the CAS registry number 5808-22-0 at a purity of 95%. The compound has the formula C10H10Na2O10S2, corresponding to a molecular weight of 400.3 g/mol. Its systematic (IUPAC) name is disodium, 4,5-dihydroxynaphthalene-2,7-disulfonate. Dihydrate. Common synonyms include Chromotropic acid disodium salt dihydrate and Disodium chromotropate dihydrate.

In its supplied form it is an off white to brown solid. Key physical data: a melting point of above 300 °C. Store in a tightly closed container in a cool, dry and well-ventilated place. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

Key uses span analytical determinations and agrochemical formulations. Our customers for this product work in pharmaceutical manufacturing, academic and industrial research and agrochemical production.

Standard pack sizes are 100 g, 1 kg and 4 x 25 kg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Analytical determinations
Agrochemical formulations

Industries

Specifications & identifiers

Chemical identifiers
Product name	Chromotropic acid sodium salt
Catalogue No.	VQ-010839
CAS Number	5808-22-0
IUPAC name	disodium;4,5-dihydroxynaphthalene-2,7-disulfonate;dihydrate
Molecular formula	C₁₀H₁₀Na₂O₁₀S₂
Molecular weight	400.3 g/mol
Exact mass	399.9511
Grade	Synthesis
Purity / assay	95%
HSN code	29089990
InChIKey	QUEAKWJKJBFNEG-UHFFFAOYSA-L
SMILES	C1=C2C=C(C=C(C2=C(C=C1S(=O)(=O)[O-])O)O)S(=O)(=O)[O-].O.O.[Na+].[Na+]
PubChem CID	2723846

Physical properties
Physical form	Solid
Appearance	Off white to brown solid
Melting point	>300 °C
H-bond donors / acceptors	4 / 10
TPSA	174 Å²
Synonyms	1,8-Dihydroxynaphthalene-3,6-disulfonic acid disodium salt, 4,5-Dihydroxynaphthalene-2,7-disulfonic acid disodium salt, Chromotropic acid disodium salt dihydrate, Disodium chromotropate dihydrate, 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-, sodium salt, hydrate (1:2:2), 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-, disodium salt, dihydrate, Sodium 4,5-dihydroxynaphthalene-2,7-disulfonate dihydrate, Disodium 4,5-dihydroxynaphthalene-2,7-disulfonate Dihydrate, Chromotropic acid disodium dihydrate, Disodium Chromotropate Dihydrate (Technical Grade), 4.5-Dihydroxy-2.7-naphthalene disulfonic acid disodium salt, 4,5-Dihydroxynaphthalene-2,7-disulfonic acid disodium salt dihydrate

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 5808-22-0

Chromotropic acid disodium salt, 98%

CAS: 5808-22-0
Formula: C₁₀H₁₀Na₂O₁₀S₂
MW: 400.3 g/mol

VQ-010837

EP/Ph. Eur. / ACS / AR

Chromotropic acid disodium salt, EP/Ph. Eur., ACS, AR

CAS: 5808-22-0
Formula: C₁₀H₁₀Na₂O₁₀S₂
MW: 400.3 g/mol

VQ-047119

AR

Chromotropic acid disoidum salt, GR

CAS: 5808-22-0
Formula: C₁₀H₁₀Na₂O₁₀S₂
MW: 400.3 g/mol

VQ-010838

Frequently asked questions

What is the CAS number of Chromotropic acid sodium salt?

The CAS Registry Number of Chromotropic acid sodium salt is 5808-22-0. It is also known as 1,8-Dihydroxynaphthalene-3,6-disulfonic acid disodium salt, 4,5-Dihydroxynaphthalene-2,7-disulfonic acid disodium salt, Chromotropic acid disodium salt dihydrate.

What is the molecular formula and molecular weight of Chromotropic acid sodium salt?

Chromotropic acid sodium salt has the molecular formula C10H10Na2O10S2 and a molecular weight of 400.3 g/mol.

Which grade and pack sizes of Chromotropic acid sodium salt can I order?

We supply Chromotropic acid sodium salt in Synthesis (95%) grade, in 100 g, 1 kg, 4 x 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Chromotropic acid sodium salt?

Yes. Every lot of Chromotropic acid sodium salt 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 Chromotropic acid sodium salt be shipped internationally?

Yes. Chromotropic acid sodium salt 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.