Diiodomethane

ChemicalBook > CAS DataBase List > 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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View Lastest Price from Diiodomethane manufacturers

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 Guanlang Biotechnology Co,.LTD

Product: Diiodomethane 75-11-6
Price: US $49.60/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 5000kg
Release date: 2021-06-30

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

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75-11-6

27704

1975-11-5

1975-11-06

75-11-5

27-70-4

1975-11-6

76-11-6

1975/11/6

75116

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