FORM 4
[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

Roby Anne K 		2. Issuer Name and Ticker or Trading Symbol

PRAXAIR INC [ PX ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                      _____ 10% Owner
__ X __ Officer (give title below)      _____ Other (specify below)
Senior Vice President
(Last)          (First)          (Middle)

C/O PRAXAIR, INC., 10 RIVERVIEW DRIVE 		3. Date of Earliest Transaction (MM/DD/YYYY)

1/11/2018
(Street)

DANBURY, CT 06810
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. Code
(Instr. 8) 		4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5) 		5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4) 		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock                  1135.6102   I   401(k)  
Common Stock   1/11/2018     M    10230   A $76.16   28200   D  
 
Common Stock   1/11/2018     F    6635   (1) D $165.52   21565   D  
 

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. Code
(Instr. 8) 		5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5) 		6. Date Exercisable and Expiration Date 7. Title and Amount of Securities Underlying Derivative Security
(Instr. 3 and 4) 		8. Price of Derivative Security
(Instr. 5) 		9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Option (right to buy)   $76.16   1/11/2018     M         10230    2/23/2011   (2) 2/23/2020   Common Stock   10230   $0   0   D  
 
Stock Option (right to buy)   $97.84                    2/22/2012   (2) 2/22/2021   Common Stock   13195     13195   D  
 
Stock Option (right to buy)   $109.68                    2/28/2013   (2) 2/28/2022   Common Stock   18430     18430   D  
 
Stock Option (right to buy)   $110.58                    2/26/2014   (2) 2/26/2023   Common Stock   15790     15790   D  
 
Stock Option (right to buy)   $128.80                    2/25/2015   (2) 2/25/2024   Common Stock   19900     19900   D  
 
Stock Option (right to buy)   $128.38                    2/24/2016   (3) 2/24/2025   Common Stock   26490     26490   D  
 
Stock Option (right to buy)   $102.22                    2/23/2017   (4) 2/23/2026   Common Stock   49405     49405   D  
 
Stock Option (right to buy)   $118.71                    2/28/2018   (5) 2/28/2027   (5) Common Stock   39585     39585   D  
 
Deferred Stock   $0   (6)                    (7)   (7) Common Stock   4260.818     4260.818   D  
 

Explanation of Responses:
(1)  Shares of common stock withheld to pay the option exercise price, taxes and fees. No market sale of shares occurred. The reporting person acquired and held 3,595 shares net of the shares withheld.
(2)  This option became exercisable in three (3) equal annual installments beginning on the first anniversary of the date of grant.
(3)  This option vests over three years in three consecutive equal annual installments beginning on February 24, 2016.
(4)  This option vests over three years in three consecutive equal annual installments beginning on February 23, 2017.
(5)  This option vests over three years in three consecutive equal annual installments beginning on February 28, 2018.
(6)  Conversion to Praxair Common Stock is on a 1-for-1 basis.
(7)  Deferred stock units acquired under the Praxair, Inc. Compensation Deferral Plan as amended ("Deferral Plan") and are to be settled in Praxair Common Stock.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Roby Anne K
C/O PRAXAIR, INC.
10 RIVERVIEW DRIVE
DANBURY, CT 06810

Senior Vice President

Signatures
Anthony M. Pepper, Attorney-in-Fact 1/15/2018
** Signature of Reporting Person Date


Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
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