Thorin I

Thorin I - Names and Identifiers

Name	Thorin I
Synonyms	APANS ASPAN Thorin I DISODIUM-1-(O-ARSONOPHENYLAZO)-2-NAPHTHOL-3,6-DISULFONIC ACID 1-(O-ARSONOPHENYLAZO)-2-NAPHTHOL-3,6-DISULFONIC ACID DISODIUM SALT 2-(3,6-DISULFO-2-HYDROXY-1-NAPHTHYLAZO)BENZENE ARSONIC ACID, DISODIUM 2-(2-HYDROXY-3,6-DISULFO-1-NAPHTHYLAZO)PHENYLARSONIC ACID DISODIUM SALT 2-[(2-HYDROXY-3,6-DISULFO-1-NAPHTHYL)AZO]BENZENEARSONIC ACID DISODIUM SALT 2-(3,6-Disulfo-2-hydroxy-1-naphthylazo)benzene arsonic acid, disodium salt 2-(2-HYDROXY-3,6-DISULFO-1-NAPHTHYLAZO)-BENZENE-ARSONIC ACID SODIUM SALT OCTAHYDRATE disodium (4E)-4-[(2-arsonophenyl)hydrazono]-3-oxo-3,4-dihydronaphthalene-2,7-disulfonate
CAS	3688-92-4
EINECS	222-993-1
InChI	InChI=1/C16H13AsN2O10S2.2Na/c20-16-14(31(27,28)29)8-9-7-10(30(24,25)26)5-6-11(9)15(16)19-18-13-4-2-1-3-12(13)17(21,22)23;;/h1-8,18H,(H2,21,22,23)(H,24,25,26)(H,27,28,29);;/q;2*+1/p-2/b19-15+;
InChIKey	DCSRPHQBFSYJNN-BUFQOAPZSA-L

Thorin I - Physico-chemical Properties

Molecular Formula	C16H11AsN2Na2O10S2
Molar Mass	576.3
Melting Point	>300°C
Water Solubility	Soluble in water.
Appearance	powder to crystal
Color	Orange to Brown to Dark red
pKa	pK1:3.7;pK2:8.3;pK3:11.8 (25°C)
PH	6.1 (10g/l, H2O, 20℃)
Storage Condition	Store at +5°C to +30°C.

Thorin I - Risk and Safety

Risk Codes	R23/25 - Toxic by inhalation and if swallowed. R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Safety Description	S20/21 - S28 - After contact with skin, wash immediately with plenty of soap-suds. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S60 - This material and its container must be disposed of as hazardous waste. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets.
UN IDs	UN 3465 6.1/PG 3
WGK Germany	3
TSCA	Yes
HS Code	29270000
Hazard Class	6.1(a)
Packing Group	II

Thorin I - Introduction

Thorin I(Thorin I) is an organic compound with the following properties:

1. Appearance: Thorin I is a yellow powdery solid.
2. Solubility: It can be dissolved in water, but insoluble in organic solvents.
3. Stability: The compound is relatively stable at room temperature and stored for a long time under dry conditions.

Thorin I is mainly used in the field of analytical chemistry and is often used as an analytical reagent for cobalt. It can form a blue complex with cobalt ions, and the content of cobalt can be determined by colorimetry or fluorescence method.

The method of preparing Thorin I is as follows:
1. First, 2-naphthol reacts with aniline to form aniline arsenate.
2. Then, 1-(2-arsic acid phenylazo)-2-naphthol -3,6-disulfonic acid was generated by coupling reaction of arsic acid aniline and o-thiophenol acid.
3. Finally, the product is reacted with the sodium salt to form Thorin I.

The following safety information is required when using, storing and handling Thorin I:
1. avoid contact with skin and eyes, such as accidental contact, should immediately rinse with plenty of water.
2. in the use of the process to maintain good ventilation conditions.
3. Store Thorin I in a dry, cool place.
4. Isolated from other chemicals, heat and fire sources to prevent the risk of fire or explosion.
5. If accidentally swallowed or inhaled, seek medical attention immediately.

Last Update：2024-04-09 21:01:54