Product Information
Biological Information
Physicochemical Information
Melting Point>300 °C
pH value6.5 (5 g/l, H₂O, 20 °C)
Bulk density200 - 400 kg/m3
Solubility5 g/l
Materials Information
Toxicological Information
LD 50 oralLD50 Rat 60 mg/kg
Safety Information according to GHS
Hazard Pictogram(s) Hazard Pictogram(s)
Hazard Statement(s)H301: Toxic if swallowed.
Precautionary Statement(s)P308 + P310: IF exposed or concerned: immediately call a POISON CENTER or doctor/ physician.
Signal WordDanger
Storage class6.1C Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
WGKWGK 2 obviously hazardous to water
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
Hazard Symbols Hazard SymbolsToxic
Categories of dangertoxic
R PhraseR 25
Toxic if swallowed.
S PhraseS 37-45
Wear suitable gloves.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
Product Usage Statements
Storage and Shipping Information
StorageStore at +5°C to +30°C.
Packaging Information
Transport Information
Declaration (railroad and road) ADR, RIDUN 3143 , 6.1, III
Declaration (transport by air) IATA-DGRUN 3143 , 6.1, III
Declaration (transport by sea) IMDG-CodeUN 3143 , 6.1, III
Supplemental Information
Transition rangepH 3.1 - pH 4.4 pink - orange yellow
Appearance of solutionpasses test
Loss on drying (110 °C)≤ 5
Transition range (according to ACS)passes test
Sensitivity testpasses test


Methyl orange (C.I. 13025) SDS


Safety Data Sheet (SDS) 

Methyl orange (C.I. 13025) Certificates of Analysis

Product Number PackagingSpecificationLot Number
1013220025 Glass bottlePDF Specification Document
1013220100 Glass bottlePDF Specification Document
1013221000 Metal canPDF Specification Document

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