MilliporeSigma
All Photos(4)

155721

Sigma-Aldrich

Methacrylic acid

contains 250 ppm MEHQ as inhibitor, 99%

Synonym(s):
2-Methacrylic acid, 2-Methylpropenoic acid
Linear Formula:
H2C=C(CH3)COOH
CAS Number:
Molecular Weight:
86.09
Beilstein:
1719937
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23

vapor density

>3 (vs air)

vapor pressure

1 mmHg ( 20 °C)

Assay

99%

form

liquid

autoignition temp.

752 °F

contains

250 ppm MEHQ as inhibitor

refractive index

n20/D 1.431 (lit.)

pH

2.0-2.2 (20 °C, 100 g/L)

bp

163 °C (lit.)

mp

12-16 °C (lit.)

density

1.015 g/mL at 25 °C (lit.)

SMILES string

C=C(C)C(O)=O

InChI

1S/C4H6O2/c1-3(2)4(5)6/h1H2,2H3,(H,5,6)

InChI key

CERQOIWHTDAKMF-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Related Categories

Compare Similar Items

View Full Comparison

1 of 4

This Item
M559098.00578234931
Methacrylic acid contains 250 ppm MEHQ as inhibitor, 99%

Sigma-Aldrich

155721

Methacrylic acid

Methyl methacrylate contains ≤30 ppm MEHQ as inhibitor, 99%

Sigma-Aldrich

M55909

Methyl methacrylate

Methacrylic acid (stabilised with hydroquinone monomethyl ether) for synthesis

Sigma-Aldrich

8.00578

Methacrylic acid

Allyl methacrylate contains 50-185 ppm MEHQ as inhibitor, 98%

Sigma-Aldrich

234931

Allyl methacrylate

vapor density

>3 (vs air)

vapor density

3.5 (vs air)

vapor density

-

vapor density

-

vapor pressure

1 mmHg ( 20 °C)

vapor pressure

29 mmHg ( 20 °C)

vapor pressure

<1 hPa ( 20 °C)

vapor pressure

4.6 mmHg ( 20 °C)

assay

99%

assay

99%

assay

≥99% (GC)

assay

98%

form

liquid

form

-

form

liquid

form

liquid

refractive index

n20/D 1.431 (lit.)

refractive index

n20/D 1.414 (lit.)

refractive index

-

refractive index

n20/D 1.436 (lit.)

pH

2.0-2.2 (20 °C, 100 g/L)

pH

-

pH

2.0-2.2 (20 °C, 100 g/L in H2O)

pH

-

General description

Methacrylic acid (MAA) is an organic compound, colorless, viscous liquid. It is a monofunctional methacrylayte monomer. It is soluble in warm water and miscible in most organic solvents. MAA is used as a starting material for the production of its esters, especially methyl methacrylate and poly methyl methacrylate (PMMA).

Application

MAA is used to synthesize poly(methacrylic acid)-g-poly(ε-caprolactone) copolymers, polymeric blends with PMMA and hydroxyethyl methacrylate (HEMA)-MAA hydrogels.

Pictograms

CorrosionSkull and crossbones

Signal Word

Danger

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Eye Dam. 1 - Skin Corr. 1A - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 1

Flash Point(F)

152.6 °F - closed cup

Flash Point(C)

67 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Documents related to the products that you have purchased in the past have been gathered in the Document Library for your convenience.

Visit the Document Library

Difficulty Finding Your Product Or Lot/Batch Number?

Product numbers are combined with Pack Sizes/Quantity when displayed on the website (example: T1503-25G). Please make sure you enter ONLY the product number in the Product Number field (Example: T1503).

Example:

T1503
Product Number
-
25G
Pack Size/Quantity

Additional examples:

705578-5MG-PW

PL860-CGA/SHF-1EA

MMYOMAG-74K-13

1000309185

enter as 1.000309185)

Having trouble? Feel free to contact Technical Service for assistance.

Lot and Batch Numbers can be found on a product's label following the words 'Lot' or 'Batch'.

Aldrich Products

  • For a lot number such as TO09019TO, enter it as 09019TO (without the first two letters 'TO').

  • For a lot number with a filling-code such as 05427ES-021, enter it as 05427ES (without the filling-code '-021').

  • For a lot number with a filling-code such as STBB0728K9, enter it as STBB0728 without the filling-code 'K9'.

Not Finding What You Are Looking For?

In some cases, a COA may not be available online. If your search was unable to find the COA you can request one.

Request COA

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service