Epoxy curing agent Knowledge p-Tolualdehyde p-Tolualdehyde

p-Tolualdehyde p-Tolualdehyde

广告位

Structural formula of p-methylbenzaldehyde

Structural formula

Business number 02QV
Molecular formula C8H8O
Molecular weight 120.15
label

4-methylbenzaldehyde,

4-Methyl-Benzaldehyde

Numbering system

CAS number:104-87-0

MDL number:MFCD00006954

EINECS number:203-246-9

RTECS number:CU7034500

BRN number:385772

PubChem number:24901194

Physical property data

1. Properties: colorless liquid, with gentle floral and almond aroma.

2. Density (g/mL, 25℃): 1.0194

3. Relative density (20℃, 4℃): 1.0190

4. Melting point (ºC): -6

5. Boiling point (ºC, normal pressure): 106 (1333pa)

6. Boiling point (ºC, 8mmHg): 204-205

7. Refractive index (n20D): 1.5454

8. Flash point (ºC): 85

9. Refractive index at room temperature (n20): 1.5454

10. Autoignition point or ignition temperature (ºC): 395

11. Liquid phase standard hot melt (J·mol-1·K-1): 215.2

12. Saturated vapor pressure ( kPa, ºC): Undetermined

13. Heat of combustion (KJ/mol): Undetermined

14. Critical temperature (ºC): Undetermined

15. Critical pressure (KPa): Undetermined

16. Log value of oil-water (octanol/water) distribution coefficient: Undetermined

17. Explosion upper limit (%, V/ V): 5.6

18. Lower explosion limit (%, V/V): 0.9

19. Solubility: miscible with ethanol, ether and acetone, slightly soluble in water .

Toxicological data

1. Skin/eye irritation: Standard Dresser test: rabbit skin contact, 500mgREACTION SEVERITY, moderate reaction; Standard Dresser test: rabbit eye contact, 100mgREACTION SEVERITY, moderate reaction; 2. Acute toxicity: rat oral LD50 : 1600mg/kg; Rat inhalation LC: >2200mg/m3; Rat peritoneal cavity LD50: 800mg/kg; Mouse oral LD50: 3200mg/kg; Mouse peritoneal cavity LD50: 400mg/kg; 3 .Acute toxicity:

Oral LD50 3200mg/kg(mus)

1600 mg/kg(rat)

Skin LD50 2500mg/kg(rat)

Inhalation LC >2200000ug/m3(rat)

Eye irritation moderate 500mg(rbt)

Main irritating effects:

On the skin: Irritation to skin and mucous membranes

On the eyes: Irritating effects

Sensitization: No known sensitizing effects

Ecological data

General remarks

Water hazard level 1 (German regulations) (self-assessment via list) This substance is slightly hazardous to water.

Do not allow undiluted or large amounts of product to come into contact with groundwater, waterways or sewage systems.

Do not discharge materials into the surrounding environment without government permission.

Molecular structure data

1. Molar refractive index: 37.83

2. Molar volume (cm3/mol): 117.3

3. Isotonic specific volume (90.2K ): 289.9

4. Surface tension (dyne/cm): 37.2

5. Dielectric constant: 2.27

6. Dipole moment (10-24cm3):

7. Polarizability: 14.99

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP): None

2. Number of hydrogen bond donors: 0

3. Number of hydrogen bond acceptors: 1

4. Number of rotatable chemical bonds: 1

5. Number of tautomers: 4

6. Topological molecule polar surface area 17.1

7. Number of heavy atoms: 9

8. Surface charge: 0

9. Complexity: 90.7

10. Number of isotope atoms: 0

11. Determine the number of atomic stereocenters: 0

12. Uncertain number of atomic stereocenters: 0

13. Determine the number of chemical bond stereocenters: 0

14. Number of uncertain chemical bond stereocenters: 0

15. Number of covalent bond units: 1

Properties and stability

1. Avoid contact with oxidants and air.

2. Exist in smoke.

3. Found in certain things, such as rice, tomatoes, and beer.

Storage method

Store in a cool, ventilated warehouse. Keep away from fire and heat sources. should be kept away from oxidizer, do not store together. Store away from air. Equipped with the appropriate variety and quantity of fire equipment. The storage area should be equipped with emergency release equipment and suitable containment materials.

Synthesis method

1. Using toluene as raw material, first chloromethylate it, and then follow the Sommelet reaction method to obtain p-tolubenzaldehyde.

Purpose

1. Organic synthesis intermediates.

2. Can be used to prepare flavors such as lily of the valley, clove, lily, coconut, almond, etc.

广告位
This article is from the Internet, does not represent the position of Epoxy curing agent, reproduced please specify the source.https://www.dmp-30.vip/archives/88634

author:

Previous article
Next article
Contact Us

Contact us

+86 - 152 2121 6908

Online consultation: QQ交谈

E-mail: info@newtopchem.com

Working hours: Monday to Friday, 9:00-17:30, closed on holidays
Follow wechat
Scan wechat and follow us

Scan wechat and follow us

Follow Weibo
Back to top
Home
Phone
Products
Search