ChemicalBook > CAS DataBase List > Diiodomethane

Diiodomethane

Product Name
Diiodomethane
CAS No.
75-11-6
Chemical Name
Diiodomethane
Synonyms
CH2I2;METHYLENE IODIDE;Diodomethane;Mi-gee;Diiodmethan;Dijodmethan;Diiodmethane;Mi-gee brand;diiodo-methan;DIIODOMETHANE
CBNumber
CB6854214
Molecular Formula
CH2I2
Formula Weight
267.84
MOL File
75-11-6.mol
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Diiodomethane Property

Melting point:
6 °C
Boiling point:
67-69 °C11 mm Hg(lit.)
Density 
3.325 g/mL at 25 °C(lit.)
vapor density 
9.25 (vs air)
refractive index 
1.737
Flash point:
181°C
storage temp. 
Store below +30°C.
solubility 
0.8g/l
form 
Liquid
Specific Gravity
3.325
color 
deep yellow
Water Solubility 
14 g/L (20 ºC)
Sensitive 
Light Sensitive
Merck 
14,6066
BRN 
1696892
Dielectric constant
5.3（-4℃）
Stability:
Stable. Incompatible with strong oxidizing agents, strong bases. Reacts violently with alkali metal salts. May discolour on exposure to light.
CAS DataBase Reference
75-11-6(CAS DataBase Reference)
NIST Chemistry Reference
Methane, diiodo-(75-11-6)
EPA Substance Registry System
Methylene iodide (75-11-6)
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Safety

Hazard Codes 
Xi,Xn
Risk Statements 
36/37/38-22-20/21/22
Safety Statements 
26-37/39-36/37/39
RIDADR 
2810
WGK Germany 
3
RTECS 
PA8575000
F 
8
TSCA 
Yes
HazardClass 
6.1
PackingGroup 
III
HS Code 
29033080
Toxicity
LD50 orally in Rabbit: 76 mg/kg
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H332Harmful if inhaled

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P310IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
8.18153
Product name
Diiodomethane
Purity
for synthesis
Packaging
25mL
Price
$61.8
Updated
2024/03/01
Sigma-Aldrich
Product number
8.18153
Product name
Diiodomethane
Purity
for synthesis
Packaging
50mL
Price
$120
Updated
2024/03/01
Sigma-Aldrich
Product number
8.18153
Product name
Diiodomethane
Purity
for synthesis
Packaging
1L
Price
$2180
Updated
2024/03/01
Sigma-Aldrich
Product number
158429
Product name
Diiodomethane
Purity
ReagentPlus , 99%, contains copper as stabilizer
Packaging
25g
Price
$54.8
Updated
2024/03/01
Sigma-Aldrich
Product number
158429
Product name
Diiodomethane
Purity
ReagentPlus , 99%, contains copper as stabilizer
Packaging
100g
Price
$137
Updated
2024/03/01
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Diiodomethane Chemical Properties,Usage,Production

Description

Diiodomethane (CH2I2) is an iodine containing organic compound. Its decomposition in acetonitrile initiated by 310nm light has been investigated. Femtosecond pump-probe spectroscopic and ab initio molecular dynamics simulations studies of the photodecomposition of CH2I2 suggest the formation of the isomer of diiodomethane (CH2I-I) as hot photoproduct. In the atmosphere, it undergoes photolysis in the presence of ozone to afford iodine oxide (IO) which results in the formation of aerosols. Its vacuum ultraviolet (VUV) photoabsorption spectrum has been reported.

Diiodomethane has been used as a probe liquid for evaluation of the polar and dispersive components of the surface energy of the catecholamine coated fiber surfaces. It may be used for the preparation of cyclopropyl ketones, esters and amides.
Diiodomethane may be used as a probe solvent in contact angle measurement to analyze the hydrophilicity of polymer surfaces.
https://www.sigmaaldrich.com/catalog/product/sial/158429

Chemical Properties

Diiodomethane is a light yellow or gold liquid with chloroform-like odour. It has a relative density of 3.325 at 20°C and can be mixed with benzene to produce liquids with different densities. These mixtures are used in the determination of the refractive indices of minerals and for the separation of minerals according to density.

Uses

Diiodomethane is used to determine the density of minerals and other solid samples due to its high density. It is used as an optical contact liquid to determine the refractive index of certain gemstones. In simmons-smith reaction, it acts as a reagent to generate methylene (carbine) free radical. It reacts with olefins to prepare cyclopropanes with high stereo specificity.

Application

Diiodomethane is used as the dispersive (non-polar) liquid while de-ionized water and glycerol as polar liquids. It is also used in separating mixtures of minerals. In determining the specific gravity of minerals and other substances. In the manufacture of x-ray contrast media.

General Description

Diiodomethane (CH2I2) is an iodine containing organic compound. Its decomposition in acetonitrile initiated by 310nm light has been investigated. Femtosecond pump-probe spectroscopic and ab initio molecular dynamics simulations studies of the photodecomposition of CH2I2 suggest the formation of the isomer of diiodomethane (CH2I-I) as hot photoproduct. In the atmosphere, it undergoes photolysis in the presence of ozone to afford iodine oxide (IO) which results in the formation of aerosols. Its vacuum ultraviolet (VUV) photoabsorption spectrum has been reported.

Hazard

May be irritating and narcotic.
Diiodomethane has the advantages of high opacity,ease of penetration,and ease of removal because it evaporates fairly quickly.However,it can cause skin burns.

Synthesis

Diiodomethane can be prepared from the widely available solvent dichloromethane by the action of sodium iodide in acetone in the Finkelstein reaction:
CH2Cl2 + 2 NaI → CH2I2 + 2 NaCl.
It can also be prepared by reducing iodoform with elemental phosphorus or sodium arsenite:
CHI3 + Na3AsO3 + NaOH → CH2I2 + NaI + Na3AsO.
Diiodomethane is prepared by reacting iodoform with sodium acetate in ethanol.

Purification Methods

Fractionally distil it under reduced pressure, then fractionally crystallise it by partial freezing, and stabilize it with silver wool if necessary. It has also been purified by drying over CaCl2 and fractionally distilling from Cu powder. Store it in the dark. [Beilstein 1 IV 97.]

Diiodomethane Preparation Products And Raw materials

Raw materials

Sodium arsenite solution Benzyltriethylammonium chloride Iodoform

Preparation Products

Cyclopropyl carbinol Piperonyloyl chloride METHYL 3-METHOXY-4,5-METHYLENEDIOXYBENZOATE N,N-DiMethylMethyleneaMMoniuM Iodide 4-BROMO-7-METHOXY-BENZO[1,3]DIOXOLE-5-CARBOXYLIC ACID METHYL ESTER 3,4-(METHYLENEDIOXY)PHENYLACETIC ACID 3,4-(METHYLENEDIOXY)PHENYL ISOCYANATE BIS(PHENYLTHIO)METHANE
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Diiodomethane Suppliers

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View Lastest Price from Diiodomethane manufacturers

Hebei Chuanghai Biotechnology Co,.LTD
Product
Diiodomethane 75-11-6
Price
US $49.60/KG
Min. Order
1KG
Purity
99%
Supply Ability
5000kg
Release date
2024-08-21
Hebei Mojin Biotechnology Co., Ltd
Product
1,1-diiodomethane
Price
US $0.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
50000KG/month
Release date
2023-07-20
Hebei Miaobian Biotechnology Co., Ltd
Product
Diiodomethane 75-11-6
Price
US $10.00/KG
Min. Order
1KG
Purity
99.99
Supply Ability
10Ton
Release date
2021-12-07

75-11-6, DiiodomethaneRelated Search:

Iodoform Propidium iodide Methylene Blue Trifluoromethyl iodide Iodomethane Iodine 4,4'-Diphenylmethane diisocyanate Dimethiodal sodium DIIODOMETHANE-D2,DIIODOMETHANE-D2, 99 ATOM % D Methylene Chloride TETRAIODOETHYLENE TRIIODOACETIC ACID Diiododifluoromethane 1,1-DIIODO-2,2-DIMETHYLPROPANE CARBON TETRAIODIDE DIIODOMETHANE-13C, 99 ATOM % 13C,DIIODOMETHANE (13C) Tolyl diiodomethyl sulfone 1,1-diiodoethane

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