80-52-4

Basic information

• Product Name: 1,8-DIAMINO-P-MENTHANE
• Synonyms: 4-(1-Amino-1-methylethyl)-1-methylcyclohexanamine;4-amino-.alpha.,.alpha.-4-trimethyl-Cyclohexanemethanamine;4-Amino-alpha,alpha,4-trimethylcyclohexanemethamine;4-amino-alpha,alpha,4-trimethyl-cyclohexanemethanamin;ai3-23799;Menthanediamine;nsc5612;p-Menthane-1,8-diamine
• CAS NO: 80-52-4
• Molecular Formula: C₁₀H₂₂N₂
• Molecular Weight: 170.3
• EINECS: 201-287-7
• Product Categories: Building Blocks;Chemical Synthesis;Nitrogen Compounds;Organic Building Blocks;Polyamines
• Mol File: 80-52-4.mol
• Article Data: 5

Chemical Properties

• Melting Point: −45 °C(lit.)
• Boiling Point: 107-126 °C10 mm Hg(lit.)
• Flash Point: 200 °F
• Appearance: /
• Density: 0.914 g/mL at 25 °C(lit.)
• Vapor Pressure: 10 mm Hg ( 20 °C)
• Refractive Index: n20/D 1.4805(lit.)
• Storage Temp.: 2-8°C
• PKA: 11.02±0.70(Predicted)
• Stability: Stable. Combustible. Incompatible with strong oxidizing agents.
• CAS DataBase Reference: 1,8-DIAMINO-P-MENTHANE(CAS DataBase Reference)
• NIST Chemistry Reference: 1,8-DIAMINO-P-MENTHANE(80-52-4)
• EPA Substance Registry System: 1,8-DIAMINO-P-MENTHANE(80-52-4)

Safety Data

• Hazard Codes: T
• Statements: 23/24/25-34
• Safety Statements: 26-27-28-36/37/39-45
• RIDADR: UN 2922 8/PG 2
• WGK Germany: 3
• RTECS: OS8925000
• HazardClass: 8
• PackingGroup: III
• Hazardous Substances Data: 80-52-4(Hazardous Substances Data)

Usage

Chemical Properties

dark coloured liquid

Uses

Different sources of media describe the Uses of 80-52-4 differently. You can refer to the following data:
1. Curing agent for epoxy resins, chemical intermediate.
2. 1,8-Diamino-p-menthane is generally used in the synthesis of various Schiff bases that are used in the preparation of coordination complexes with Cu(II), Zn(II), Cr(III), Fe(III) and Co(III) ions. It is also used as a precursor to synthesize heterocyclic Schiff base derivatives with herbicidal activity.

Definition

A primary alicyclic diamine, also a tert-alkylamine.

General Description

Blackish liquid.

Air & Water Reactions

Slightly water soluble .

Reactivity Profile

1,8-DIAMINO-P-MENTHANE neutralizes acids in exothermic reactions to form salts plus water. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen may be generated in combination with strong reducing agents, such as hydrides.

Hazard

Strong irritant to eyes and skin, calls for eye protection.

Fire Hazard

1,8-DIAMINO-P-MENTHANE is combustible.

InChI:InChI=1/C10H20.2H3N/c1-8(2)10-6-4-9(3)5-7-10;;/h8-10H,4-7H2,1-3H3;2*1H3

Upstream product

• 99977-24-9 1,8-dinitro-p-menthane 
• 64-19-7 acetic acid 
• 80-53-5 terpin hydrate 
• 99-85-4 crithmene 
• 138-86-3 limonene. 
• 112766-74-2 1,8-p-menthane dibenzamide 
• 80-56-8 Pinene 
• 64374-26-1 N-(2-(4-acetamido-4-methylcyclohexyl)propan-2-yl)acetamide 
• 64374-19-2 8-Azido-1-hydroxy-trans-p-menthan 
• 565-48-0 cis-1,8-terpine 
• 74-90-8 hydrogen cyanide 
• 64374-25-0 1,8-Diazido-p-menthan 
• 98-55-5 terpineol 

Downstream Products

• 13908-64-0 1-(2-Chloro-ethyl)-3-(4-{1-[3-(2-chloro-ethyl)-ureido]-1-methyl-ethyl}-1-methyl-cyclohexyl)-urea 
• 1295584-38-1 1,8-bis(2-furancarboxamido)-p-menthane 
• 1295584-37-0 1,8-bis(2-thiophenecarboxamido)-p-menthane 
• 99977-24-9 1,8-dinitro-p-menthane 
• 64374-26-1 N-(2-(4-acetamido-4-methylcyclohexyl)propan-2-yl)acetamide 
• 35046-17-4 1,8-Dipropionamido-p-menthan 
• 96535-25-0 1-Guanidino-1-methyl-4-<α-guanidino-isopropyl>-cyclohexan 
• 112766-74-2 1,8-p-menthane dibenzamide 
• 14002-20-1 N,N'-dimethylene-p-menthane-1,8-diyldiamine 
• 5116-72-3 p-menthane-1,8-diyl diisocyanate 

Relevant articles and documents

Method for preparingp-menthane-1,8-diamine by one-step method

The invention provides a method for preparing p-menthane-1,8-diamine by a one-step method, which comprises the following steps: by taking unsaturated turpentine monoterpene as a reaction raw material, strong protonic acid as a reaction raw material and a nitrogen-containing inorganic compound as a reaction raw material, carrying out one-step reaction in water, and after the reaction is completed, conducting extracting and carrying out reduced pressure distillation to obtain a p-menthane-1,8-diamine purified product. The method provided by the invention has the advantages of few steps, easy purification, direct preparation of p-menthane-1,8-diamine by a one-step method, high product purity and high yield, byproducts are carbon dioxide and sulfate, and the sulfate can be directly treated after gas is subjected to absorption treatment. According to the invention, the unsaturated turpentine monoterpene, the strong protonic acid and the nitrogen-containing inorganic compound are jointly used as reaction raw materials for the first time, so that the one-step reaction can be realized, and the technical defect that the one-step reaction cannot be realized by a synthesis thought that protonic acid is used as a catalyst in a traditional preparation method is overcome.

Method for preparing 4-amino-alpha, alpha,4-trimethyl-cyclohexanemethanamine from unsaturated turpentine monoterpene

The invention discloses a method for preparing 4-amino-alpha, alpha,4-trimethyl-cyclohexanemethanamine from unsaturated turpentine monoterpene. The unsaturated turpentine monoterpene is used as a raw material and takes a reaction with organic nitrile under the catalysis of strong protonic acid; after full reaction, reaction liquid is neutralized into a neutral state; a non-water-soluble organic solvent is added for extraction; an organic layer is collected and is subjected to still standing; 4-amino-alpha, alpha,4-trimethyl-cyclohexanemethanamine crystals are separated out. 4-amino-alpha, alpha,4-trimethyl-cyclohexanemethanamine solid is hydrolyzed in a polyatomic alcohol solution of inorganic strong base to obtain 4-amino-alpha, alpha,4-trimethyl-cyclohexanemethanamine crude products; negative pressure distillation is performed to obtain 4-amino-alpha, alpha,4-trimethyl-cyclohexanemethanamine pure products. The yield of the 4-amino-alpha, alpha,4-trimethyl-cyclohexanemethanamine product obtained by the method is high; the purity is high. Compared with the existing preparation method, the method has the advantages that the unsaturated turpentine monoterpene which has low cost and is easy to obtain is used as the raw material; the process route is simple; the production cost of the 4-amino-alpha, alpha,4-trimethyl-cyclohexanemethanamine can be effectively reduced; in addition, the method also has the advantages of low toxicity, simple operation process and the like.

Process for preparing 1-oxa-3,8-diaza-4-oxo-spiro-[4,5]-decanes

1-Oxa-3,8-diaza-4-oxo-spiro-[4,5]-decane compounds of the formula STR1 are new light stabilizers for protecting polymers from the damaging effect of UV radiation.