The specification for the % of Isomer Diisocyanates is ≤ 10.0%, and the % of Triisocyanate is specified as 20.0 - 40.0%. For lot-specific results, please refer to the Certificate of Analysis for that lot.
8.20797
Diphenylmethane 4,4′-diisocyanate
(mixture of di-and triisocyanates) for synthesis
Sinónimos:
Diphenylmethane 4,4′-diisocyanate, Methylenediphenylene diisocyanate
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| A ustedes/SKU | Disponibilidad | Precio |
|---|---|---|
100 mL | Comprobar disponibilidad del carrito | $51.80 |
500 mL | Comprobar disponibilidad del carrito | $93.00 |
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Fórmula empírica (notación de Hill):
C15H10N2O2
Número CAS:
Peso molecular:
250.25
UNSPSC Code:
12352118
EC Index Number:
202-966-0
NACRES:
NA.22
MDL number:
Servicio técnico
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Permítanos ayudarlevapor pressure
0.066 hPa ( 20 °C)
Quality Segment
form
liquid
autoignition temp.
>600 °C
potency
>5000 mg/kg LD50, oral (Rat), >9000 mg/kg LD50, skin (Rabbit)
expl. lim.
0.4 % (v/v)
bp
196 °C/7 hPa
mp
10 °C
transition temp
flash point 196 °C
solubility
2 g/L (decomposition)
density
1.239 g/cm3 at 20 °C
storage temp.
2-30°C
SMILES string
N(=C=O)c1ccc(cc1)Cc2ccc(cc2)N=C=O
InChI
1S/C15H10N2O2/c18-10-16-14-5-1-12(2-6-14)9-13-3-7-15(8-4-13)17-11-19/h1-8H,9H2
InChI key
UPMLOUAZCHDJJD-UHFFFAOYSA-N
Application
- Oil absorption enhancement with hydrophobic nanofibrils: Hydrophobic cellulose nanofibrils modified with Diphenylmethane 4,4′-diisocyanate and other diisocyanates demonstrated improved performance in absorbing circulating oil, offering significant potential for environmental cleanup applications (Chen et al., 2024).
- Evaluation of adhesion enhancers for foliar applications: Research on self-assembling eugenol-loaded particles, which might involve Diphenylmethane 4,4′-diisocyanate for carrier adhesion on leaves, indicated enhanced efficiency in foliar applications and underscored the importance of ecotoxicological safety (Zhang et al., 2023).
- Development of deformative polyurethane actuators: Diphenylmethane 4,4′-diisocyanate was used in the synthesis of self-healing polyurethane actuators that respond to light, heat, and humidity, highlighting its utility in creating smart materials for advanced engineering applications (Dong et al., 2023).
Analysis Note
Assay (GC, area%): 50.0 - 70.0 % (a/a)
Density (d 20 °C/ 4 °C): 1.237 - 1.242
isomer Diisocyantes (GC, area%): ≤ 10.0 % (a/a)
triisocyanate (GC, area%): 20.0 - 40.0 % (a/a)
Identity (IR): passes test
Density (d 20 °C/ 4 °C): 1.237 - 1.242
isomer Diisocyantes (GC, area%): ≤ 10.0 % (a/a)
triisocyanate (GC, area%): 20.0 - 40.0 % (a/a)
Identity (IR): passes test
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Este artículo | |||
|---|---|---|---|
| solubility 2 g/L (decomposition) | solubility - | solubility - | solubility 0.015 g/L (slow decomposition) |
| storage temp. 2-30°C | storage temp. 2-30°C | storage temp. 2-30°C | storage temp. 2-30°C |
| density 1.239 g/cm3 at 20 °C | density 1.05 g/cm3 at 25 °C | density 1.22 g/cm3 at 20 °C | density 1.06 g/cm3 at 20 °C |
| bp 196 °C/7 hPa | bp 255 °C/1013 hPa | bp 247 °C/1013 hPa | bp 158-159 °C/13 hPa |
| form liquid | form liquid | form liquid | form liquid |
| mp 10 °C | mp -67 °C | mp 12-14 °C | mp -60 °C |
signalword
Danger
Hazard Classifications
Acute Tox. 4 Inhalation - Carc. 2 - Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - Skin Sens. 1 - STOT RE 2 Inhalation - STOT SE 3
target_organs
Respiratory system
Clase de almacenamiento
11 - Combustible Solids
wgk
WGK 1
flash_point_f
411.8 °F - closed cup
flash_point_c
211 °C - closed cup
Certificados de análisis (COA)
Busque Certificados de análisis (COA) introduciendo el número de lote del producto. Los números de lote se encuentran en la etiqueta del producto después de las palabras «Lot» o «Batch»
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Could you please confirm the %NCO for Diphenylmethane 4,4′-diisocyanate
1 answer-
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How can I determine the shelf life / expiration / retest date of this product?
1 answer-
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/418/501/product-dating-information-06-25-mk.pdfHelpful?
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
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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Could you please confirm whether this product is in a liquid, stable form? Thank you in advance for prompt answer - it is very urgent for me.
1 answer-
Yes, 820797 should be in liquid form at room temperature (e.g. 20 DegC). Since its melting point is 10 DegC, it could solidify when the local temperature goes below 10 DegC.
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