structure of 821-11-4

(E)2-Butene-1,4-Diol(CAS 821-11-4)

CAS No.: 821-11-4 Brand: MolBest
M. Ft.: C4H8O2 Cat. No: G9127569
M. Wt.: 88.11 MDL: MFCD00063207
Storage: Store in a cool,dry area. Use: For laboratory research use only
Purity Grade Package Stock Price Quantity
97%
Documents:COANMRGCSDS
RG 250MG In Stock 7 USD
97%
Documents:COANMRGCSDS
RG 1G In Stock 12 USD
97%
Documents:COANMRGCSDS
RG 5G In Stock 41 USD
97%
Documents:COANMRGCSDS
RG 25G In Stock 115 USD
97%
Documents:COANMRGCSDS
RG 100G In Stock 342 USD
97%
Documents:COANMRGCSDS
RG 500G In Stock 2660 USD
Your region is eligible for ordering.
Should you have any questions, please contact us by Email.
Batch COA
Available
NMR Spectrum
Verified
In Stock
Fast Shipping
ISO 9001
Quality System

Quick Links

Applications of 821-11-4

The applications of 2-butene-1,4-diol are diverse:

  • Chemical Intermediates: Used in the synthesis of various chemicals including endosulfan.
  • Plasticizers: Incorporated into alkyd resins to enhance flexibility and durability.
  • Pharmaceuticals: Serves as a precursor in the synthesis of vitamins and other bioactive compounds.
  • Fungicides: Employed in synthetic resins to provide antifungal properties.

Physical and chemical properties of 821-11-4

Acidity coefficient

13.88±0.10(Predicted)

Boiling Point

141-149 °C AT 20 MM HG

Density

1.067-1.074

Exact Mass

88.05240

Flash Point

128 °C (263 °F) OC

H Bond Acceptors

2

H Bond Donors

2

Index of Refraction

INDEX OF REFRACTION: 1.476-1.478 AT 25 °C/D

LogP

-0.681463407333333

Melting Point

7 °C (45 °F)

Molecular Formula

C4H8O2

Molecular Weight

88.10510

Odor

ODORLESS

PSA

40.46000

Solubility

VERY SOL IN WATER, ETHYL ALCOHOL, ACETONE; SPARINGLY SOL IN BENZENE

Storage condition

2-8°C

Vapour density

3.0 (AIR= 1)

Vapour Pressure

0.04 [mmHg]

Spectrums of 821-11-4

Attention:
1.The NMR spectrum displayed on the page is a pre-sale reference spectrum and may differ from that of the actual received batch.
2.The accompanying documentation will include the NMR spectrum and purity analysis data for the shipped batch.
Physical sample testing spectrum (NMR) of 821-11-4

Retrosynthesis analysis of 821-11-4


Q&A for CAS 821-11-4

1. How can I verify product quality?
Every batch of our Chemical Reagents is tested to meet ISO 9001 standards. We provide COA & NMR & SDS Provided with each shipment. Batch COA available for verification, and third-party retesting is supported. A full refund is offered if our data is incorrect.

2. What is the delivery time?
Orders from Ready stock / In stock items typically Ships Tomorrow via Fast Shipping via FedEx/DHL/UPS. International deliveries usually arrive within 7 business days, subject to customs clearance.

3. What if the received product doesn’t meet quality standards?
If your Lab Grade Chemical Reagents do not match the Batch COA available, we will issue a replacement or a full refund upon verification.

4. Are hazardous labels included? How is safe shipping ensured?
Hazardous products are labeled and packaged following international regulations. We provide SDS Provided with all hazardous shipments to ensure safe and compliant transport.

5. Do you offer technical support?
Yes. Our Lab Supplier team is available to assist with questions about product usage, storage, Lab Grade requirements, applications, and more.

6. Are volume discounts available?
Yes. For bulk orders of Chemical Reagents, we offer competitive pricing. Submit a quotation request and we’ll provide a tailored offer.

7. Do you provide samples?
Yes, samples are available for selected Lab Grade products. Please submit a request to confirm availability and specifications.

8. Do you have products in stock?
Yes. Items labeled In stock / Ready stock on our website are available for immediate shipment, usually within 1–2 business days. Large packs or custom specifications require lead time confirmation.

9. Can you customize purity or packaging?
Yes. We support customization of Lab Grade purity, packaging size, and special testing requirements. Share your needs and we’ll provide a tailored solution.

10. Is the COA consistent with the shipped batch?
Yes. Batch COA available matches the actual shipment. COAs shown online are for reference or from previous batches.

11. Do you support long-term supply agreements?
Yes. We offer Lab Supplier services for stable batch consistency, pricing agreements, and safety stock for long-term customers to ensure uninterrupted supply.

12. What payment methods do you accept?
We accept Pay Local Currency via bank transfer (T/T), PayPal, and other methods. Credit terms are available for qualified long-term partners.

Download SDS of 821-11-4

Pictograms

Signal Word

Warning

Hazard Statements

H302 Harmful if swallowed
H315 Causes skin irritation
H319 Causes serious eye irritation
H335 May cause respiratory irritation

Safety Data Sheet

Download COA of 821-11-4

CAS/Product ID
*Required fields
Lot/Batch Number
*Required fields

Operate under the ISO 9001 system