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LC3913 Iodomethane
(stabilised with silver)for synthesis


Order number Packaging Quantity Price €
AC30913 Glass bottle 50 ml 23.40
AC30913 Glass bottle 250 ml 77.85
AC30913 Glass bottle 1 l 223.20


Product information
Synonyms Methyl iodide
Hill Formula CH3I
HS Code 2903 39 90
EC number 200-819-5
Molar mass 141.94 g/mol
EC indexnumber 602-005-00-9
CAS number 74-88-4


Chemical and physical data
Ignition temperature 352 °C
Melting point -66 °C
Molar mass 141.94 g/mol
Density 2.28 g/cm3 (20 °C)
Boiling point 42 °C
Vapor pressure 540 hPa (25 °C)
Explosion limit 8.5 – 66 %(V)
Refractive index 1.5304 (20 °C, 589 nm)


Safety information according to GHS
Hazard Statement(s) H351: Suspected of causing cancer.
H312: Harmful in contact with skin.
H331: Toxic if inhaled.
H301: Toxic if swallowed.
H335: May cause respiratory irritation.
H315: Causes skin irritation.
Precautionary Statement(s) P281: Use personal protective equipment as required.
P302 + P352: IF ON SKIN: Wash with plenty of soap and water.
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)

RTECS PA9450000
Storage class 6.1B Non combustible substances, toxic
WGK WGK 3 highly water endangering9
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 21-23/25-37/38-40
Harmful in contact with skin.Toxic by inhalation and if swallowed.Irritating to respiratory system and skin.Limited evidence of a carcinogenic effect.
S Phrase S 36/37-38-45
Wear suitable protective clothing and gloves.In case of insufficient ventilation, wear suitable respiratory equipment.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
Categories of danger toxic, irritant, carcinogenic
Hazard Symbol Toxic


Transport information
Declaration (transport by sea) IMDG-Code UN 2644 METHYL IODIDE, 6.1, I, Segregation Group: 10 (Liquid halogenated hydrocarbons)
Declaration (transport by air) IATA-DGR UN 2644 METHYL IODIDE, 6.1, I


Toxicological data
LD 50 oral LD50 rat 76 mg/kg


Assay (GC, area%) ≥ 99 %
Density (d 20 °C/ 4 °C) 2.271 – 2.277
Dimethylsulfate (GC, area%) ≤ 0.01 %
Identity (IR) passes test


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Dimethylsulfate (GC, area%)