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Cocoa Pyrazine Aroma Chemical
CAS# 55031-15-7 / 13925-07-0

Nutty, Roasted, Cocoa, Hazelnut, Earthy

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Cocoa Pyrazine, also known as 2-Ethyl-3,5(6)-dimethylpyrazine, is a synthetic aroma compound belonging to the pyrazine family, characterized by its distinctive roasted cocoa, chocolate, and nutty notes. Its aroma is warm, dry, and slightly sweet, reminiscent of peanut shells, roasted hazelnuts, and coffee, creating an authentic impression of roasted ingredients.

In perfumery, Cocoa Pyrazine is used to develop cocoa, dark chocolate, coffee, hazelnut, and roasted peanut accords. It is particularly valuable in gourmand fragrances, adding depth, realism, and distinctive roasted nuances while balancing sweet ingredients such as vanilla, caramel, and praline.

Cocoa Pyrazine has an extremely powerful aroma and is typically used at trace levels to achieve a noticeable effect. Pre-dilution is recommended for evaluation and formulation, allowing precise control over its roasted character and preventing it from overpowering other ingredients in the composition.

Technical standards

Lot 2026052701 MFD 5/27/2026 BBD 5/27/2028
Physical appearance Transparent liquid Conform
Color Clear to pale yellow Conform
Refractive Index @20˚C 1.501 → 1.503 1.5024
Boiling point 66.0°C Conform
Purity ≥ 99.0% 99.83%

Solubility @25˚C

Solvent Solubility (g/L)
ethanol 655.48
methanol 989.61
isopropanol 381.16
water 7.31
ethyl acetate 408.5
n-propanol 544.88
acetone 386.24
n-butanol 503.07
acetonitrile 492.55
DMF 531.69
toluene 384.88
isobutanol 404.7
1,4-dioxane 745.16
methyl acetate 352.85
THF 983.07
2-butanone 419.39
n-pentanol 412.24
sec-butanol 429.04
n-hexane 231.41
ethylene glycol 126.68
NMP 696.31
cyclohexane 305.31
DMSO 468.81
n-butyl acetate 563.29
n-octanol 271.82
chloroform 2017.84
n-propyl acetate 287.77
acetic acid 455.14
dichloromethane 2219.03
cyclohexanone 729.17
propylene glycol 125.26
isopropyl acetate 235.85
DMAc 469.98
2-ethoxyethanol 382.87
isopentanol 368.67
n-heptane 211.57
ethyl formate 432.86
1,2-dichloroethane 897.71
n-hexanol 535.88
2-methoxyethanol 523.24
isobutyl acetate 208.72
tetrachloromethane 580.71
n-pentyl acetate 327.86
transcutol 696.58
n-heptanol 260.43
ethylbenzene 253.61
MIBK 223.27
2-propoxyethanol 554.46
tert-butanol 339.23
MTBE 377.2
2-butoxyethanol 317.58
propionic acid 338.73
o-xylene 267.75
formic acid 234.59
diethyl ether 567.47
m-xylene 259.7
p-xylene 352.87
chlorobenzene 600.06
dimethyl carbonate 155.02
n-octane 86.67
formamide 226.33
cyclopentanone 709.13
2-pentanone 360.29
anisole 327.59
cyclopentyl methyl ether 539.48
gamma-butyrolactone 800.01
1-methoxy-2-propanol 312.36
pyridine 694.48
3-pentanone 350.47
furfural 751.7
n-dodecane 61.64
diethylene glycol 308.17
diisopropyl ether 167.29
tert-amyl alcohol 377.31
acetylacetone 292.13
n-hexadecane 68.28
acetophenone 294.91
methyl propionate 317.93
isopentyl acetate 421.78
trichloroethylene 1433.74
n-nonanol 220.5
cyclohexanol 439.75
benzyl alcohol 289.55
2-ethylhexanol 362.99
isooctanol 194.49
dipropyl ether 437.2
1,2-dichlorobenzene 569.07
ethyl lactate 138.47
propylene carbonate 476.67
n-methylformamide 375.9
2-pentanol 303.59
n-pentane 193.73
1-propoxy-2-propanol 364.81
1-methoxy-2-propyl acetate 308.84
2-(2-methoxypropoxy) propanol 235.36
mesitylene 174.66
ε-caprolactone 569.85
p-cymene 237.77
epichlorohydrin 876.84
1,1,1-trichloroethane 876.83
2-aminoethanol 242.35
morpholine-4-carbaldehyde 548.32
sulfolane 763.03
2,2,4-trimethylpentane 93.71
2-methyltetrahydrofuran 817.09
n-hexyl acetate 417.71
isooctane 59.8
2-(2-butoxyethoxy)ethanol 303.84
sec-butyl acetate 192.0
tert-butyl acetate 217.11
decalin 129.51
glycerin 143.56
diglyme 565.56
acrylic acid 282.96
isopropyl myristate 170.69
n-butyric acid 524.4
acetyl acetate 255.64
di(2-ethylhexyl) phthalate 168.56
ethyl propionate 266.39
nitromethane 488.39
1,2-diethoxyethane 466.1
benzonitrile 506.69
trioctyl phosphate 134.29
1-bromopropane 744.16
gamma-valerolactone 735.73
n-decanol 165.76
triethyl phosphate 182.64
4-methyl-2-pentanol 165.0
propionitrile 515.87
vinylene carbonate 514.76
1,1,2-trichlorotrifluoroethane 488.92
DMS 260.27
cumene 199.8
2-octanol 197.32
2-hexanone 314.77
octyl acetate 219.84
limonene 327.81
1,2-dimethoxyethane 638.78
ethyl orthosilicate 182.89
tributyl phosphate 173.4
diacetone alcohol 196.8
N,N-dimethylaniline 260.45
acrylonitrile 503.42
aniline 361.95
1,3-propanediol 326.9
bromobenzene 710.55
dibromomethane 1491.1
1,1,2,2-tetrachloroethane 1075.38
2-methyl-cyclohexyl acetate 284.21
tetrabutyl urea 201.19
diisobutyl methanol 169.59
2-phenylethanol 349.35
styrene 305.35
dioctyl adipate 213.18
dimethyl sulfate 199.85
ethyl butyrate 371.82
methyl lactate 134.58
butyl lactate 204.03
diethyl carbonate 265.28
propanediol butyl ether 226.73
triethyl orthoformate 263.38
p-tert-butyltoluene 199.53
methyl 4-tert-butylbenzoate 251.58
morpholine 688.74
tert-butylamine 300.16
n-dodecanol 133.33
dimethoxymethane 438.68
ethylene carbonate 427.59
cyrene 225.57
2-ethoxyethyl acetate 329.16
2-ethylhexyl acetate 380.82
1,2,4-trichlorobenzene 569.4
4-methylpyridine 686.72
dibutyl ether 382.99
2,6-dimethyl-4-heptanol 169.59
DEF 460.73
dimethyl isosorbide 417.94
tetrachloroethylene 892.21
eugenol 247.4
triacetin 266.92
span 80 233.9
1,4-butanediol 192.01
1,1-dichloroethane 830.34
2-methyl-1-pentanol 365.3
methyl formate 353.81
2-methyl-1-butanol 411.61
n-decane 100.35
butyronitrile 621.58
3,7-dimethyl-1-octanol 231.06
1-chlorooctane 266.61
1-chlorotetradecane 117.12
n-nonane 115.07
undecane 74.29
tert-butylcyclohexane 119.44
cyclooctane 120.31
cyclopentanol 476.55
tetrahydropyran 823.32
tert-amyl methyl ether 328.54
2,5,8-trioxanonane 368.2
1-hexene 432.43
2-isopropoxyethanol 252.07
2,2,2-trifluoroethanol 169.64
methyl butyrate 358.38

Scent© AI

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  • CAS NUMBER

    55031-15-7
    13925-07-0

  • FAMILIES

    Gourmand

  • BRAND

    Scent.vn

  • EVAPORATION RATE

    Moderately fast

  • Odor impact

    High est.

  • FLASH POINT

    68.03 ˚C est.

Olfactory Pyramid

top heart

Notes

Nutty
Roasted
Cocoa
Hazelnut
Earthy

IFRA standard 51

Recommendation
No restriction
Maximum acceptable concentrations in the finished product (%)
Category 1
Products applied to the lips
 No restriction Category 7A
Rinse-off products applied to the hair with some hand contact
 No restriction
Category 2
Products applied to the axillae
 No restriction Category 7B
Leave-on products applied to the hair with some hand contact
 No restriction
Category 3
Products applied to the face/body using fingertips
 No restriction Category 8
Products with significant anogenital exposure
 No restriction
Category 4
Products related to fine fragrance
 No restriction Category 9
Products with body and hand exposure, primarily rinse off
 No restriction
Category 5A
Body lotion products applied to the body using the hands (palms), primarily leave on
 No restriction Category 10A
Household care products with mostly hand contact
 No restriction
Category 5B
Face moisturizer products applied to the face using the hands (palms), primarily leave on
 No restriction Category 10B
Household care products with mostly hand contact, including aerosol/spray products (with potential leave-on skin contact)
 No restriction
Category 5C
Hand cream products applied to the hands using the hands (palms), primarily leave on
 No restriction Category 11A
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate without UV exposure
 No restriction
Category 5D
Baby Creams, baby Oils and baby talc
 No restriction Category 11B
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate with potential UV exposure
 No restriction
Category 6
Products with oral and lip exposure
 No restriction Category 12
Products not intended for direct skin contact, minimal or insignificant transfer to skin
 No restriction

Shipping & Returns

  • All orders will be processed within 1-3 business days from the time the order is confirmed.
  • Free shipping is available for international retail orders valued at 500 USD or more.
  • Delivery time is 1-3 business days for local areas, 3-7 days for suburban and nationwide deliveries, and 1-4 weeks for international orders.
  • You have 15 days from the date you receive the product to initiate a return, provided the product remains unopened and the seal is intact.
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Certificates of Quality

  • Certificate of Analysis (COA)

    Provides information on the physical and chemical properties of the product.
    Download  

  • IFRA Certificate of Conformity

    Sets safety standards and guidelines for the product in manufacturing.
    Download  

  • Safety Data Sheet (SDS)

    Provides important safety guidelines for transporting, storing, and using the product.
    Download  
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