CAS No.98-82-8,CUMENE Suppliers,MSDS download

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Basic Information

Molecular Structure:
CAS No.:	98-82-8
Name:	CUMENE
Article Data:	749

Formula:	C₉H₁₂
Molecular Weight:	120.194
Synonyms:	Cumene(8CI);(1-Methylethyl)benzene;2-Phenylpropane;Cumol;Isopropylbenzene;NSC8776;i-Propylbenzene;
EINECS:	202-704-5
Density:	0.862 g/cm³
Melting Point:	-96 °C(lit.)
Boiling Point:	152.409 °C at 760 mmHg
Flash Point:	31.135 °C
Solubility:	Soluble in alcohol, ether, acetone, benzene, carbon tetrachloride. Insoluble in water.
Appearance:	colourless liquid
Hazard Symbols:	Xn,N
Risk Codes:	10-37-51/53-65
Safety:	24-37-61-62
Transport Information:	UN 1918 3/PG 3
PSA:	0.00000
LogP:	2.81000

Raw Materials

108-20-3

2085-88-3

99-89-8

80-15-9

71254-82-5

625-81-0

83521-78-2

2510-99-8

Downstream Products

111-65-9

100-86-7

618-45-1

127-18-4

632-50-8

80-15-9

110-82-7

21192-57-4

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Chemistry

The MF of Cumene(98-82-8): C₉H₁₂
The MW of Cumene(98-82-8): 120.19
The Structure:
EINECS: 202-704-5
Appearance: colorless liquid
Density: 0.862 g cm^-3, liquid
Melting point: -96 °C (177 K)
Boiling point: 152 °C (425 K)
Flash point 102 °C
Solubility in water: insoluble
Viscosity: 0.777 cP at 21 °C
vapor density: 4.1 (vs air)
vapor pressure: 8 mm Hg ( 20 °C)
refractive index: n20/D 1.491
storage temp: 2-8°C
Other names:2-Phenylpropane; isopropylbenzene; methyl ethyl benzene;
Cumene(98-82-8) is an organic compound that is an aromatic hydrocarbon. It is a constituent of crude oil and refined fuels. It is a flammable colorless liquid that has a boiling point of 152 °C.

Uses

Cumene(98-82-8) is an important intermediate, it is used to manufacture phenol, acetone, and or-methylstyrene.

Production

Cumene(98-82-8) is manufactured by reacting benzene with propylene over a catalyst such as a phosphoric acid derivative at 175 to 250 °C and 400 to 600 psi. A refinery cut of mixed propylene-propane is frequently used instead of the more expensive pure propylene. Benzene is provided in substantial excess to avoid polyalkylation. The yield is near quantitative (in excess of 90 percent) based on propylene.
C₆H₆+ CH₃CH=CH₂ → C₆H₅CH(CH₃)₂ Excess benzene stops the reaction at the monoalkylated stage and prevents the polymerization of propylene. The cumene(98-82-8) is separated by distillation, boiling point 153 °C . Other catalysts that have been used are aluminum chloride and sulfuric acid.

Toxicity Data With Reference

1.	skn-rbt 10 mg/24H open MLD	AMIHBC AMA Archives of Industrial Hygiene and Occupational Medicine. 4 (1951),119.
2.	skn-rbt 100 mg/24H MOD	85JCAE Prehled Prumyslove Toxikologie; Organicke Latky Marhold, J.,Prague, Czechoslovakia.: Avicenum,1986,33.
3.	eye-rbt 86 mg MLD	AMIHAB AMA Archives of Industrial Health. 14 (1956),387.
4.	eye-rbt 500 mg/24H MLD	85JCAE Prehled Prumyslove Toxikologie; Organicke Latky Marhold, J.,Prague, Czechoslovakia.: Avicenum,1986,33.
5.	ihl-hmn TCLo:200 ppm:NOSE,CNS,PUL	TGNCDL Handbook of Organic Industrial Solvents. 2 (1961),39.
6.	orl-rat LD50:1400 mg/kg	AMIHAB AMA Archives of Industrial Health. 14 (1956),387.
7.	RTECS: GR8575000

Consensus Reports

Community Right-To-Know List. CUMENE is reported in EPA TSCA Inventory. EPA Genetic Toxicology Program.

Safety Profile

Hazard Codes: Xn, N
Risk Statements: 10-37-51/53-65
10: Flammable
37: Irritating to the respiratory system
51/53: Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment
65: Harmful: May cause lung damage if swallowed
Safety Statements: 24-37-61-62
24: Avoid contact with skin
37: Wear suitable gloves
61: Avoid release to the environment. Refer to special instructions safety data sheet
62: If swallowed, do not induce vomiting: seek medical advice immediately and show this container or label
RIDADR: UN 1918 3/PG 3
WGK Germany: 1
F: 10: Keep under argon.
HazardClass: 3
PackingGroup: III
Moderately toxic by ingestion. Mildly toxic by inhalation and skin contact. Human systemic effects by inhalation: an antipsychotic, unspecified changes in the sense of smell and respiratory system. An eye and skin irritant.

Standards and Recommendations

OSHA PEL: TWA 50 ppm (skin)
ACGIH TLV: TWA 50 ppm
DFG MAK: 50 ppm (250 mg/m³)
DOT Classification: 3; Label: Flammable Liquid

Analytical Methods

For occupational chemical analysis use NIOSH: Hydrocarbons, Aromatic, 1501.

Specification

Handling and Storage of CUMENE(98-82-8)
Handling: Use spark-proof tools and explosion proof equipment. Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes. Avoid ingestion and inhalation.
Storage: Keep away from sources of ignition. Store in a cool, dry place. Store in a tightly closed container. Flammables-area.