ChemicalBook >> CAS DataBase List >>AF-2

AF-2

CAS No.
3688-53-7
Chemical Name:
AF-2
Synonyms
ff;furylfuramide;AF-2;tofuron;NSC 44973;furylamide;af2(preservative);Furylfuramide (AF-2);alpha-2-furyl-5-nitro-2-furanacrylamid;2-(furyl)-3-(5-nitro-2-furyl)acrylamide
CBNumber:
CB8179544
Molecular Formula:
C11H8N2O5
Molecular Weight:
248.19
MDL Number:
MFCD00869231
MOL File:
3688-53-7.mol
MSDS File:
SDS
Last updated:2026-05-28 03:50:12

AF-2 Properties

Melting point >152°C (dec.)
Boiling point 391.26°C (rough estimate)
Density 1.4153 (rough estimate)
refractive index 1.5300 (estimate)
storage temp. Amber Vial, Refrigerator
solubility DMSO (Slightly), Methanol (Slightly, Heated)
form Solid
pka 14.00±0.50(Predicted)
color Orange to Dark Red
Stability Stable. Hydrophobic.
FDA UNII 054NR2135Y
IARC 2B (Vol. 31, Sup 7) 1987
EPA Substance Registry System Furylfuramide (3688-53-7)

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)Health Hazard (GHS08)
GHS07,GHS08
Signal word  Warning
Hazard statements  H302-H351
Precautionary statements  P201-P202-P280-P308+P313-P405-P501
HS Code  2932990090
Hazardous Substances Data 3688-53-7(Hazardous Substances Data)

AF-2 price More Price(17)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
TRC TRC-F864270-10MG Furylfuramide >95%(HPLC) 3688-53-7 10mg $268 2026-06-03 Buy
Usbiological 164253 Furylfuramide ≥97% 3688-53-7 10mg $569 2026-06-03 Buy
TRC TRC-F864270-100MG Furylfuramide >95%(HPLC) 3688-53-7 100mg $1965 2026-06-03 Buy
Biosynth FF162430 2-(2-Furyl)-3-(5-nitro-2-furyl)acrylamide 3688-53-7 1mg $162.25 2026-06-04 Buy
Biosynth FF162430 2-(2-Furyl)-3-(5-nitro-2-furyl)acrylamide 3688-53-7 2mg $259.6 2026-06-04 Buy
Product number Packaging Price Buy
TRC-F864270-10MG 10mg $268 Buy
164253 10mg $569 Buy
TRC-F864270-100MG 100mg $1965 Buy
FF162430 1mg $162.25 Buy
FF162430 2mg $259.6 Buy

AF-2 Chemical Properties, Uses, Production

Chemical Properties

orange crystalline solid

Uses

Furylfuramide is a synthetic nitrofuran derivative widely used as a food additive and was investigated for possible carcinogenicity.

Definition

ChEBI: A member of the class of acrylamides that is acrylamide which is substituted at positions 2 and 3 by 2-furyl and 5-nitro-2-furyl groups, respectively (the trans isomer). Formerly used as a food preservative, it was withdrawn from the marke following suspicions of carcenogenicity.

General Description

Bright orange crystals.

Air & Water Reactions

Hydrophobic. Insoluble in water.

Reactivity Profile

A nitrated amide. Organic amides/imides react with azo and diazo compounds to generate toxic gases. Flammable gases are formed by the reaction of organic amides/imides with strong reducing agents. Amides are very weak bases (weaker than water). Imides are less basic yet and in fact react with strong bases to form salts. That is, they can react as acids. Mixing amides with dehydrating agents such as P2O5 or SOCl2 generates the corresponding nitrile. The combustion of these compounds generates mixed oxides of nitrogen (NOx).

Health Hazard

ACUTE/CHRONIC HAZARDS: When heated to decomposition 2-(2-FURYL)-3-(5-NITRO-2-FURYL)ACRYLAMIDE emits toxic fumes.

Fire Hazard

Flash point data for 2-(2-FURYL)-3-(5-NITRO-2-FURYL)ACRYLAMIDE are not available but 2-(2-FURYL)-3-(5-NITRO-2-FURYL)ACRYLAMIDE is probably combustible.

Safety Profile

Confirmed carcinogen with experimental carcinogenic, neoplastigenic, and teratogenic data. Poison by ingestion. Experimental reproductive effects. Human mutation data reported. When heated to decomposition it emits toxic fumes of NOx.

Toxicology

AF-2 was legally approved for use in Japan in 1965 and was added to soybean curd (tofu), ham, sausage, fish ham, fish sausage, and fish paste (kamaboko). The safety-testing data on which the compound was approved were those obtained for acute and chronic toxicity for two years and reproductive potential for four generations using mice and rats. At the time, no attention was paid to mutagenicity. In 1973, AF-2 was proved to be mutagenic in various microbial test systems. The mutagenicity of this food additive strongly suggested its carcinogenicity and the risk of its use as a food additive. Within a year or two after the discovery of its mutagenicity, the actual carcinogenicity of this chemical was demonstrated in animal studies.The mechanism of carcinogenesis is not yet clear, but a close relation between carcinogens and mutagens has been demonstrated. AF-2 was the first example of compound that was shown to be a carcinogen. The fact that AF-2 was discovered first to be mutagenic proved the value of mutagenicity testing as a screening method for carcinogens.

AF-2 Preparation Products And Raw materials

Raw materials

Preparation Products

Global Suppliers ( 34)
Supplier Tel Email Country ProdList Advantage
J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
Aikon International Limited 025-58859352 19370895928 sales01@aikonchem.com China 15078 58
Shenzhen Polymeri Biochemical Technology Co., Ltd. +86-400-002-6226 sales@rrkchem.com China 57336 58
BOC Sciences +1-631-485-4226 inquiry@bocsci.com United States 19935 58
Energy Chemical 021-58432009 400-005-6266 marketing@energy-chemical.com China 44871 58
TCI (Shanghai) Chemical Trading Co., Ltd. 021-61109150 sales@tcisct.com China 29717 58
Nanjing Shizhou Biology Technology Co.,Ltd 13675144456 alan.chow@synzest.com China 9467 58
Pushan Industry (Shaanxi) Co., Ltd. 029-81310890 18165209495 2929288192@qq.com China 9949 58
LGC Science (Shanghai) Ltd. 17717235263 offer.de@lgcgroup.com China 19036 58
SUZHOU SENFEIDA CHEMICAL CO.,LTD +86-0512-83500002 +86-15195660023 3899766280@qq.com China 26349 58
2-(2-furyl)-3-(5-nitro-2-furyl)-acrylamid 2-(2-furyl)-3-(5-nitro-2-furyl)acrylicacidamide 2-(furyl)-3-(5-nitro-2-furyl)acrylamide furylamide tofuron AF-2(2-Furyl)-3-(5-nitro-2-furyl)acrylamide 3-(5-NITRO-2-FURYL)-2-(2-FURYL)-ACRYLAMIDE Furylfuramide (AF-2) 2-(furan-2-yl)-3-(5-nitrofuran-2-yl)acrylamide (Z)-2-(2-furyl)-3-(5-nitro-2-furyl)acrylamide 2-Furanacetamide, .alpha.-[(5-nitro-2-furanyl)methylene]- 2-Furanacrylamide, .alpha.-2-furyl-5-nitro- af2(preservative) alpha-((5-nitro-2-furanyl)methylene)-2-furanacetamid alpha-((5-nitro-2-furanyl)methylene)-2-furanacetamide alpha-(furyl)-beta-(5-nitro-2-furyl)acrylicamide alpha-2-furyl-5-nitro-2-furanacrylamid alpha-2-furyl-5-nitro-2-furanacrylamide 2-(2-FURYL)-3-(5-NITRO-2-FURYL)ACRYLAMIDE AF-2 2-Furanacetamide, α-[(5-nitro-2-furanyl)methylene]- NSC 44973 2-Furanacetamide, a-[(5-nitro-2-furanyl)methylene]- ff furylfuramide 3688-53-7