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LC5465 Thorin
indicator for sulfate titration

 

Order number Packaging Quantity Price €
AC32465 Glass bottle 5 g 36.45

 

Product information
Synonyms 1-(2-Arsonophenylazo)-2-hydroxy-3,6-naphthalene-disulfonic acid sodium salt, 2-(2-Hydroxy-3,6-disulfo-1-naphthylazo)-benzene-arsonic acid sodium salt
Hill Formula C16H11AsN2Na2O10S2
HS Code 2931 00 99
EC number 222-993-1
Molar mass 576.3 g/mol
EC index number 033-002-00-5
CAS number 3688-92-4

 

Chemical and physical data
Solubility (20 °C) soluble
Molar mass 576.3 g/mol
Bulk density 700 kg/m3
pH value 6.1 (10 g/l, H2O, 20 °C)

 

Safety information according to GHS
Hazard Statement(s) H331: Toxic if inhaled.
H301: Toxic if swallowed.
H410: Very toxic to aquatic life with long lasting effects.
Precautionary Statement(s) P273: Avoid release to the environment.
P304 + P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
Signal Word Danger
Hazard Pictogram(s)
Storage class 6.1A Combustible substances, toxic
WGK WGK 3 highly water endangering
Disposal 9
Carcinogenic compounds and flammable compounds labelled “Highly toxic” or “Toxic”: container F. Alkyl sulfates are carcinogenic; Take particular care to avoid inhalation and skin contact. To neutralize alkyl sulfates, add dropwise (from a dropping funnel) to concentrated ice-cool Ammonia solution (Cat.No. 105426) with vigorous stirring. Before placing in container D, check the pH with pH Universal indicator strips (Cat.No. 109535)

 

Safety information
R Phrase R 23/25-50/53
Toxic by inhalation and if swallowed.Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Categories of danger S 20/21-28-45-60-61
When using do not eat, drink or smoke.After contact with skin, wash immediately with plenty of soap and water.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).This material and its container must be disposed of as hazardous waste.Avoid release to the environment. Refer to special instructions/ Safety data sheets.
Categories of danger toxic, dangerous for the environment
Hazard Symbol

Toxic

Dangerous for the environment

 

Transport information
Declaration (transport by sea) IMDG-Code UN 3465 ORGANOARSENIC COMPOUND, SOLID, N.O.S.(1-(2-ARSONOPHENYLAZO)-2-HYDROXY-3,6-NAPHTHALENE-DISULFONIC ACID SODIUM SALT), 6.1, II
Declaration (transport by air) IATA-DGR UN 3465 ORGANOARSENIC COMPOUND, SOLID, N.O.S.(1-(2-ARSONOPHENYLAZO)-2-HYDROXY-3,6-NAPHTHALENE-DISULFONIC ACID SODIUM SALT), 6.1, II

 

Specifications
Identity (UV/VIS-Spectrum) passes test
Absorption maximum λ max (Propan-2-ol) 480 – 490 nm
Spec. Absorptivity A 1%/1cm (λmax; 0.0025 %; propan-2-ol; calc. on anhydrous substance) 250 – 350
Water (according to Karl Fischer) ≤ 25 %
Suitability as indicator (for sulfate titration) passes test