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Sigma-Aldrich

4,4′-Methylenebis(cyclohexyl isocyanate), mixture of isomers

90%

Sinónimos:

HMDI, Hydrogenated MDI

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About This Item

Fórmula lineal:
CH2(C6H10NCO)2
Número de CAS:
5124-30-1
Peso molecular:
262.35
Número CE:
225-863-2
Número MDL:
MFCD00015405
Código UNSPSC:
12162002
ID de la sustancia en PubChem:
24864223
NACRES:
NA.23

MXP 1,359.00

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Ensayo

90%

Formulario

liquid

índice de refracción

n20/D 1.497 (lit.)

mp

26 °C (lit.)

densidad

1.066 g/mL at 25 °C (lit.)

cadena SMILES

O=C=NC1CCC(CC1)CC2CCC(CC2)N=C=O

InChI

1S/C15H22N2O2/c18-10-16-14-5-1-12(2-6-14)9-13-3-7-15(8-4-13)17-11-19/h12-15H,1-9H2

Clave InChI

KORSJDCBLAPZEQ-UHFFFAOYSA-N

Categorías relacionadas

Descripción general

4,4′-Methylenebis(cyclohexyl isocyanate), mixture of isomers (HMDI) is an aromatic diisocyanate with good mechanical properties. It is light stable and is resistant to hydrolysis. It is majorly used in the synthesis of polyurethane.[1][2]

Aplicación

HMDI forms NCO linkages which can be used in the synthesis of polyurethanes for a variety of biomedical applications.[3][4][5]

Pictogramas

Skull and crossbonesHealth hazard
GHS06,GHS08

Palabra de señalización

Danger

Clasificaciones de peligro

Acute Tox. 2 Inhalation - Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3

Órganos de actuación

Respiratory system

Código de clase de almacenamiento

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

Clase de riesgo para el agua (WGK)

WGK 1

Punto de inflamabilidad (°F)

235.4 °F - closed cup

Punto de inflamabilidad (°C)

113 °C - closed cup

Equipo de protección personal

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

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Certificados de análisis (COA)

Lot/Batch Number
MKCT5764
MKCS9277
MKCS7690
MKCN5062
MKCK0868

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Hyperbranched polyurethane (HBPU)-urea and HBPU-imide coatings: effect of chain extender and NCO/OH ratio on their properties
Mishra AK, et al.
Progress in Organic Coatings, 74(1), 134-141 (2012)
M H Karol
Annals of allergy, 66(6), 485-489 (1991-06-01)
Isocyanates are highly reactive chemicals capable of causing a multitude of toxicologic effects including respiratory irritation, dermal irritation, contact sensitivity, and pulmonary hypersensitivity. In order to probe the mechanism(s) underlying these reactions, an animal model has been developed. The guinea
Jeff C H Donovan et al.
Dermatitis : contact, atopic, occupational, drug, 20(4), 214-217 (2009-10-07)
Isocyanates are widely used in the manufacturing of rigid and flexible foams, fibers, and coatings such as paints, varnishes, and elastomers but are rarely reported as contact sensitizers. The aliphatic diisocyanate dicyclohexylmethane-4,4'-diisocyanate (DMDI) is known to be a strong cutaneous
Sanjay Gandhi et al.
American journal of obstetrics and gynecology, 192(5), 1643-1648 (2005-05-20)
The purpose of this study was to examine the histopathologic changes of HMDI (Hexamethylene di-isocyanate) cross-linked porcine dermis grafts used for suburethral sling surgery. Twelve patients underwent reoperation with graft removal for urinary retention or recurrent stress urinary incontinence after
Electrospinning of L-tyrosine polyurethanes for potential biomedical applications
Shah PN, et al.
Polymer, 50(10), 2281-2289 (2009)
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Questions

1–3 of 3 Questions  

  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  3. It appears that the SDS provided for this product (H-331, toxic if inhaled) might not be in line with the H-phrases presented by some industrial suppliers (H-330 fatal if inhaled). Would it be possible to check which labelling is correct?

    1 answer

    1. Thank you for calling attention to this issue. The product safety and regulatory toxicology teams have carefully reviewed this compound and verified the GHS classification for this product. The SDS has been updated to 'Acute toxicity, Inhalation (Category 2), H330'. To the best of our knowledge this would be the most current and accurate information.

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